FAQ

Wolfer routinely produces ISO 1328 Class 6 hobbed gears and ISO 1328 Class 5 ground gears. Class 5 requires gear-grinding after heat treatment and adds roughly 5–7 days to the lead time.

Standard envelope is up to Ø 600 mm OD. For larger gears (up to Ø 1,200 mm) we use the large-machine bay at our Foshan plant — please share the drawing for a feasibility check.

Yes — we machine acetal (POM) and PA66 nylon gears for low-noise, dry-running applications. We also injection-mold plastic gears via partner tooling for higher volumes.

The advantage comes from regional manufacturing, a shorter supply chain and factory-direct service. Precision is supported by gear grinders, a PREC60 gear measuring center and coordinate measuring machines; critical process and inspection requirements remain unchanged.

The difference reflects traceable materials with EN 10204 3.1 documentation, application-specific carburizing or nitriding, post-heat-treatment grinding where specified, and 100% outgoing inspection. These controls help reduce wear, excess backlash and unplanned downtime.

Our core advantage is cost-performance and response speed. We meet the precision and life requirements of the great majority of industrial applications at a significantly lower price, with easier technical communication, shorter lead times — typically 15–25 working days for custom parts — and local service.

Purchase price, expected service life and replacement labor, unplanned downtime risk, inventory carrying cost driven by lead time, and engineering support. In our verified cases service life tripled (6 to 18+ months) and lead times fell from 12 weeks to 4 — each of these usually outweighs the sticker-price difference.

Wolfer routinely produces ISO 1328 Class 6 hobbed gears and ISO 1328 Class 5 ground gears. Class 5 requires gear-grinding after heat treatment and adds roughly 5–7 days to the lead time.

Standard envelope is up to Ø 600 mm OD. For larger gears (up to Ø 1,200 mm) we use the large-machine bay at our Foshan plant — please share the drawing for a feasibility check.

Yes — we machine acetal (POM) and PA66 nylon gears for low-noise, dry-running applications. We also injection-mold plastic gears via partner tooling for higher volumes.

No — Wolfer is ISO 9001:2015 certified, not ISO 13485. We ship as a component supplier to ISO 13485 OEMs and provide all documentation those OEMs' quality systems require (mill cert, dimensional report, heat-treatment record).

Yes. EN 10204 3.1 mill certificates ship with every part by default. EN 10204 3.2 (with mill witness) is available on request — typically adds 1 week to lead time.

Yes — SUS304, SUS316L, SUS440C, 17-4 PH are routine. We do not perform passivation in-house but the surface finish we ship is pre-qualified for downstream passivation by the customer.

No — Wolfer is not a Class-1 cleanroom facility. We are an ISO 9001 manufacturer that ships parts pre-qualified for downstream cleanroom acceptance: vacuum-degreased, electroless-nickel or hard-anodized surface, sealed in anti-static bag.

Yes. Welded SUS304 or SUS316L bellows, vacuum-tested to 10⁻⁶ Pa in-house before shipment, individually sealed.

Standard packaging is vacuum-degreased + sealed anti-static bag — clean enough for most semiconductor-OEM incoming QC. ISO 14644-compatible packaging (specific glove / wipe procedures) is available on request, adds ~1 week to lead time.

Wolfer routinely produces ISO 1328 Class 6 hobbed gears and ISO 1328 Class 5 ground gears. Class 5 requires gear-grinding after heat treatment and adds roughly 5–7 days to the lead time.

Standard envelope is up to Ø 600 mm OD. For larger gears (up to Ø 1,200 mm) we use the large-machine bay at our Foshan plant — please share the drawing for a feasibility check.

Yes — we machine acetal (POM) and PA66 nylon gears for low-noise, dry-running applications. We also injection-mold plastic gears via partner tooling for higher volumes.

Yes — send the worn part. We scan it on the CMM, identify the tooth profile, and build a CAD pack. You get a first article in ~10 working days.

One. We routinely make single-unit replacement pulleys for OEMs whose original supplier has discontinued the part.

Yes — send the worn part. We scan it on the CMM, identify the groove profile, and build a CAD pack. You get a first article in ~10 working days.

One. We routinely make single-unit replacement sheaves for OEMs whose original supplier has discontinued the part.

Yes — send us the chain spec sheet (or the chain itself) and we'll cut a matching sprocket. Common requests: attachment chains, large agricultural chains, conveyor-specific chains.

We focus on sprockets, but for full sprocket-and-chain sets we partner with major Chinese chain manufacturers such as Donghua. Tell us your duty cycle and we will recommend a chain grade.

One. For prototype and low-volume work we have no MOQ — we routinely cut single replacement parts. Our sweet-spot for unit cost is 50–200 pieces per lot.

Same day on standard ANSI / HTD parts — we have the cutter library. Custom-profile or non-standard module typically 24 hours.

Yes — that's roughly half of our torque-limiter business. We need the OEM drawing of the pulley / sprocket the limiter must fit, plus the trip torque.

Wolfer routinely produces ISO 1328 Class 6 hobbed gears and ISO 1328 Class 5 ground gears. Class 5 requires gear-grinding after heat treatment and adds roughly 5–7 days to the lead time.

Standard envelope is up to Ø 600 mm OD. For larger gears (up to Ø 1,200 mm) we use the large-machine bay at our Foshan plant — please share the drawing for a feasibility check.

Yes — we machine acetal (POM) and PA66 nylon gears for low-noise, dry-running applications. We also injection-mold plastic gears via partner tooling for higher volumes.

Two meters in a single piece on our gear grinder. For longer travels we join racks at dowelled pads and grind the assembled face — pitch matching is to ≤ 0.03 mm across the joint.

Yes — that is roughly half of our torque-limiter business. The limiter sits inside the pulley / sprocket hub, so installation simply replaces the existing transmission element. We need the OEM drawing of the pulley / sprocket the limiter must fit.

±5% of the set value, repeatable across cycles. For one-time precision protection (e.g. dynamometer test stands) we recommend shear-pin units, which are repeatable to ±1% but must be replaced after each trip.

No — harmonic drive flexsplines and circular splines are a specialty manufacturing process (high-precision tube forming + tooth grinding) that we do not offer. We make the spur / helical / bevel gears that surround the harmonic, plus the housing components.

Yes. Acetal (POM) and PA66 nylon gears are routine — we machine them on the same hobbers as steel gears. For high-volume plastic gears we partner on injection molding.

Module 0.5 is our practical lower bound — below that, tooth geometry becomes ambiguous and inspection error dominates. We have cut module 0.3 on special request.

Yes. We hold hobbing and grinding tooling for at least 5 years after first article. Re-orders for an established gear part typically ship in 15–20 days vs. 30 for a first article.

Standard envelope is Ø 600 mm. For larger gears (up to Ø 1,200 mm) we use the large-machine bay at our Foshan plant — please share the drawing for a feasibility check.

Wolfer routinely produces ISO 1328 Class 6 hobbed gears and ISO 1328 Class 5 ground gears. Class 5 requires gear-grinding after heat treatment and adds roughly 5–7 days to the lead time.

Standard envelope is up to Ø 600 mm OD. For larger gears (up to Ø 1,200 mm) we use the large-machine bay at our Foshan plant — please share the drawing for a feasibility check.

Yes — we machine acetal (POM) and PA66 nylon gears for low-noise, dry-running applications. We also injection-mold plastic gears via partner tooling for higher volumes.

Wolfer routinely produces ISO 1328 Class 6 hobbed gears and ISO 1328 Class 5 ground gears. Class 5 requires gear-grinding after heat treatment and adds roughly 5–7 days to the lead time.

Standard envelope is up to Ø 600 mm OD. For larger gears (up to Ø 1,200 mm) we use the large-machine bay at our Foshan plant — please share the drawing for a feasibility check.

Yes — we machine acetal (POM) and PA66 nylon gears for low-noise, dry-running applications. We also injection-mold plastic gears via partner tooling for higher volumes.

Wolfer routinely produces ISO 1328 Class 6 hobbed gears and ISO 1328 Class 5 ground gears. Class 5 requires gear-grinding after heat treatment and adds roughly 5–7 days to the lead time.

Standard envelope is up to Ø 600 mm OD. For larger gears (up to Ø 1,200 mm) we use the large-machine bay at our Foshan plant — please share the drawing for a feasibility check.

Yes — we machine acetal (POM) and PA66 nylon gears for low-noise, dry-running applications. We also injection-mold plastic gears via partner tooling for higher volumes.

Two meters in a single piece on our gear grinder. For longer travels, racks are dowelled at the ends and ground after assembly — pitch accuracy across joints is held to ≤ 0.03 mm.

Yes. EN 10204 3.1 mill certificates ship with every part by default. EN 10204 3.2 (with mill witness) is available on request — typically adds 1 week to lead time.

Yes — we cut the pinion from the same drawing pack as the rack, so flank profile and module are guaranteed to match. The pinion ships with the rack as a set.

Wolfer routinely produces ISO 1328 Class 6 hobbed gears and ISO 1328 Class 5 ground gears. Class 5 requires gear-grinding after heat treatment and adds roughly 5–7 days to the lead time.

Standard envelope is up to Ø 600 mm OD. For larger gears (up to Ø 1,200 mm) we use the large-machine bay at our Foshan plant — please share the drawing for a feasibility check.

Yes — we machine acetal (POM) and PA66 nylon gears for low-noise, dry-running applications. We also injection-mold plastic gears via partner tooling for higher volumes.

For high-precision positioning (encoders, ball-screw drives) use a beam, bellows, or diaphragm coupling — they have zero backlash and high torsional stiffness. A jaw coupling tolerates more misalignment but has small backlash and torsional give.

Yes — both have their own product lines. Taper Bushings covers keyed quick-mount TB / QD bushings; Locking Assemblies covers keyless shrink sleeves and shrink discs. Both stock common GB / DIN sizes, plus custom variants.

Whenever backlash matters. Locking assemblies eliminate keyway clearance entirely and survive torque reversal without fretting. They also disassemble and reposition — useful in adjustable drives and high-uptime lines. A keyed joint is cheaper to make but trades these benefits for simplicity, and is fine for low-precision, mostly-unidirectional applications.

No. We manufacture to the dimensional patterns those brands use — same bore, same taper, same bolt circle — so our parts are interchangeable in equivalent installations. We ship our own Wolfer-marked parts with EN 10204 3.1 material certificates. If you need genuine branded parts under a global supplier agreement, those should be sourced from the brand directly.

Standard GB / DIN sizes in stock ship same week from Foshan. Custom variants (non-standard bore, taper, or outer profile) are machined from solid bar in 15–25 days from drawing confirmation.

Depends on bore size, type, and bolt class. A typical Ø 50 mm shrink sleeve transmits ~3,000 Nm; a Ø 100 mm shrink disc can transmit ~30,000 Nm. Send us your duty cycle (torque, reversal frequency, shock factor) and we'll size the right pattern.

Clean the shaft and hub bore (no oil, no grit). Tighten the bolts in a diagonal sequence, multiple passes, never single-pass to full torque. Each part lot ships with the printed installation guide. We also have an installation video — ask sales.

Wolfer routinely produces ISO 1328 Class 6 hobbed gears and ISO 1328 Class 5 ground gears. Class 5 requires gear-grinding after heat treatment and adds roughly 5–7 days to the lead time.

Standard envelope is up to Ø 600 mm OD. For larger gears (up to Ø 1,200 mm) we use the large-machine bay at our Foshan plant — please share the drawing for a feasibility check.

Yes — we machine acetal (POM) and PA66 nylon gears for low-noise, dry-running applications. We also injection-mold plastic gears via partner tooling for higher volumes.

Wolfer routinely produces ISO 1328 Class 6 hobbed gears and ISO 1328 Class 5 ground gears. Class 5 requires gear-grinding after heat treatment and adds roughly 5–7 days to the lead time.

Standard envelope is up to Ø 600 mm OD. For larger gears (up to Ø 1,200 mm) we use the large-machine bay at our Foshan plant — please share the drawing for a feasibility check.

Yes — we machine acetal (POM) and PA66 nylon gears for low-noise, dry-running applications. We also injection-mold plastic gears via partner tooling for higher volumes.

Wolfer routinely produces ISO 1328 Class 6 hobbed gears and ISO 1328 Class 5 ground gears. Class 5 requires gear-grinding after heat treatment and adds roughly 5–7 days to the lead time.

Standard envelope is up to Ø 600 mm OD. For larger gears (up to Ø 1,200 mm) we use the large-machine bay at our Foshan plant — please share the drawing for a feasibility check.

Yes — we machine acetal (POM) and PA66 nylon gears for low-noise, dry-running applications. We also injection-mold plastic gears via partner tooling for higher volumes.

Wolfer routinely produces ISO 1328 Class 6 hobbed gears and ISO 1328 Class 5 ground gears. Class 5 requires gear-grinding after heat treatment and adds roughly 5–7 days to the lead time.

Standard envelope is up to Ø 600 mm OD. For larger gears (up to Ø 1,200 mm) we use the large-machine bay at our Foshan plant — please share the drawing for a feasibility check.

Yes — we machine acetal (POM) and PA66 nylon gears for low-noise, dry-running applications. We also injection-mold plastic gears via partner tooling for higher volumes.

Wolfer routinely produces ISO 1328 Class 6 hobbed gears and ISO 1328 Class 5 ground gears. Class 5 requires gear-grinding after heat treatment and adds roughly 5–7 days to the lead time.

Standard envelope is up to Ø 600 mm OD. For larger gears (up to Ø 1,200 mm) we use the large-machine bay at our Foshan plant — please share the drawing for a feasibility check.

Yes — we machine acetal (POM) and PA66 nylon gears for low-noise, dry-running applications. We also injection-mold plastic gears via partner tooling for higher volumes.

Wolfer routinely produces ISO 1328 Class 6 hobbed gears and ISO 1328 Class 5 ground gears. Class 5 requires gear-grinding after heat treatment and adds roughly 5–7 days to the lead time.

Standard envelope is up to Ø 600 mm OD. For larger gears (up to Ø 1,200 mm) we use the large-machine bay at our Foshan plant — please share the drawing for a feasibility check.

Yes — we machine acetal (POM) and PA66 nylon gears for low-noise, dry-running applications. We also injection-mold plastic gears via partner tooling for higher volumes.

Wolfer routinely produces ISO 1328 Class 6 hobbed gears and ISO 1328 Class 5 ground gears. Class 5 requires gear-grinding after heat treatment and adds roughly 5–7 days to the lead time.

Standard envelope is up to Ø 600 mm OD. For larger gears (up to Ø 1,200 mm) we use the large-machine bay at our Foshan plant — please share the drawing for a feasibility check.

Yes — we machine acetal (POM) and PA66 nylon gears for low-noise, dry-running applications. We also injection-mold plastic gears via partner tooling for higher volumes.

Wolfer routinely produces ISO 1328 Class 6 hobbed gears and ISO 1328 Class 5 ground gears. Class 5 requires gear-grinding after heat treatment and adds roughly 5–7 days to the lead time.

Standard envelope is up to Ø 600 mm OD. For larger gears (up to Ø 1,200 mm) we use the large-machine bay at our Foshan plant — please share the drawing for a feasibility check.

Yes — we machine acetal (POM) and PA66 nylon gears for low-noise, dry-running applications. We also injection-mold plastic gears via partner tooling for higher volumes.

Wolfer routinely produces ISO 1328 Class 6 hobbed gears and ISO 1328 Class 5 ground gears. Class 5 requires gear-grinding after heat treatment and adds roughly 5–7 days to the lead time.

Standard envelope is up to Ø 600 mm OD. For larger gears (up to Ø 1,200 mm) we use the large-machine bay at our Foshan plant — please share the drawing for a feasibility check.

Yes — we machine acetal (POM) and PA66 nylon gears for low-noise, dry-running applications. We also injection-mold plastic gears via partner tooling for higher volumes.

Wolfer routinely produces ISO 1328 Class 6 hobbed gears and ISO 1328 Class 5 ground gears. Class 5 requires gear-grinding after heat treatment and adds roughly 5–7 days to the lead time.

Standard envelope is up to Ø 600 mm OD. For larger gears (up to Ø 1,200 mm) we use the large-machine bay at our Foshan plant — please share the drawing for a feasibility check.

Yes — we machine acetal (POM) and PA66 nylon gears for low-noise, dry-running applications. We also injection-mold plastic gears via partner tooling for higher volumes.

Wolfer routinely produces ISO 1328 Class 6 hobbed gears and ISO 1328 Class 5 ground gears. Class 5 requires gear-grinding after heat treatment and adds roughly 5–7 days to the lead time.

Standard envelope is up to Ø 600 mm OD. For larger gears (up to Ø 1,200 mm) we use the large-machine bay at our Foshan plant — please share the drawing for a feasibility check.

Yes — we machine acetal (POM) and PA66 nylon gears for low-noise, dry-running applications. We also injection-mold plastic gears via partner tooling for higher volumes.

Wolfer routinely produces ISO 1328 Class 6 hobbed gears and ISO 1328 Class 5 ground gears. Class 5 requires gear-grinding after heat treatment and adds roughly 5–7 days to the lead time.

Standard envelope is up to Ø 600 mm OD. For larger gears (up to Ø 1,200 mm) we use the large-machine bay at our Foshan plant — please share the drawing for a feasibility check.

Yes — we machine acetal (POM) and PA66 nylon gears for low-noise, dry-running applications. We also injection-mold plastic gears via partner tooling for higher volumes.

Wolfer routinely produces ISO 1328 Class 6 hobbed gears and ISO 1328 Class 5 ground gears. Class 5 requires gear-grinding after heat treatment and adds roughly 5–7 days to the lead time.

Standard envelope is up to Ø 600 mm OD. For larger gears (up to Ø 1,200 mm) we use the large-machine bay at our Foshan plant — please share the drawing for a feasibility check.

Yes — we machine acetal (POM) and PA66 nylon gears for low-noise, dry-running applications. We also injection-mold plastic gears via partner tooling for higher volumes.

Wolfer routinely produces ISO 1328 Class 6 hobbed gears and ISO 1328 Class 5 ground gears. Class 5 requires gear-grinding after heat treatment and adds roughly 5–7 days to the lead time.

Standard envelope is up to Ø 600 mm OD. For larger gears (up to Ø 1,200 mm) we use the large-machine bay at our Foshan plant — please share the drawing for a feasibility check.

Yes — we machine acetal (POM) and PA66 nylon gears for low-noise, dry-running applications. We also injection-mold plastic gears via partner tooling for higher volumes.

Wolfer routinely produces ISO 1328 Class 6 hobbed gears and ISO 1328 Class 5 ground gears. Class 5 requires gear-grinding after heat treatment and adds roughly 5–7 days to the lead time.

Standard envelope is up to Ø 600 mm OD. For larger gears (up to Ø 1,200 mm) we use the large-machine bay at our Foshan plant — please share the drawing for a feasibility check.

Yes — we machine acetal (POM) and PA66 nylon gears for low-noise, dry-running applications. We also injection-mold plastic gears via partner tooling for higher volumes.

Wolfer routinely produces ISO 1328 Class 6 hobbed gears and ISO 1328 Class 5 ground gears. Class 5 requires gear-grinding after heat treatment and adds roughly 5–7 days to the lead time.

Standard envelope is up to Ø 600 mm OD. For larger gears (up to Ø 1,200 mm) we use the large-machine bay at our Foshan plant — please share the drawing for a feasibility check.

Yes — we machine acetal (POM) and PA66 nylon gears for low-noise, dry-running applications. We also injection-mold plastic gears via partner tooling for higher volumes.

Wolfer routinely produces ISO 1328 Class 6 hobbed gears and ISO 1328 Class 5 ground gears. Class 5 requires gear-grinding after heat treatment and adds roughly 5–7 days to the lead time.

Standard envelope is up to Ø 600 mm OD. For larger gears (up to Ø 1,200 mm) we use the large-machine bay at our Foshan plant — please share the drawing for a feasibility check.

Yes — we machine acetal (POM) and PA66 nylon gears for low-noise, dry-running applications. We also injection-mold plastic gears via partner tooling for higher volumes.

Wolfer routinely produces ISO 1328 Class 6 hobbed gears and ISO 1328 Class 5 ground gears. Class 5 requires gear-grinding after heat treatment and adds roughly 5–7 days to the lead time.

Standard envelope is up to Ø 600 mm OD. For larger gears (up to Ø 1,200 mm) we use the large-machine bay at our Foshan plant — please share the drawing for a feasibility check.

Yes — we machine acetal (POM) and PA66 nylon gears for low-noise, dry-running applications. We also injection-mold plastic gears via partner tooling for higher volumes.

Wolfer routinely produces ISO 1328 Class 6 hobbed gears and ISO 1328 Class 5 ground gears. Class 5 requires gear-grinding after heat treatment and adds roughly 5–7 days to the lead time.

Standard envelope is up to Ø 600 mm OD. For larger gears (up to Ø 1,200 mm) we use the large-machine bay at our Foshan plant — please share the drawing for a feasibility check.

Yes — we machine acetal (POM) and PA66 nylon gears for low-noise, dry-running applications. We also injection-mold plastic gears via partner tooling for higher volumes.

Wolfer routinely produces ISO 1328 Class 6 hobbed gears and ISO 1328 Class 5 ground gears. Class 5 requires gear-grinding after heat treatment and adds roughly 5–7 days to the lead time.

Standard envelope is up to Ø 600 mm OD. For larger gears (up to Ø 1,200 mm) we use the large-machine bay at our Foshan plant — please share the drawing for a feasibility check.

Yes — we machine acetal (POM) and PA66 nylon gears for low-noise, dry-running applications. We also injection-mold plastic gears via partner tooling for higher volumes.

Wolfer routinely produces ISO 1328 Class 6 hobbed gears and ISO 1328 Class 5 ground gears. Class 5 requires gear-grinding after heat treatment and adds roughly 5–7 days to the lead time.

Standard envelope is up to Ø 600 mm OD. For larger gears (up to Ø 1,200 mm) we use the large-machine bay at our Foshan plant — please share the drawing for a feasibility check.

Yes — we machine acetal (POM) and PA66 nylon gears for low-noise, dry-running applications. We also injection-mold plastic gears via partner tooling for higher volumes.

Wolfer routinely produces ISO 1328 Class 6 hobbed gears and ISO 1328 Class 5 ground gears. Class 5 requires gear-grinding after heat treatment and adds roughly 5–7 days to the lead time.

Standard envelope is up to Ø 600 mm OD. For larger gears (up to Ø 1,200 mm) we use the large-machine bay at our Foshan plant — please share the drawing for a feasibility check.

Yes — we machine acetal (POM) and PA66 nylon gears for low-noise, dry-running applications. We also injection-mold plastic gears via partner tooling for higher volumes.

A Taper-Lock (TB) bushing seats flush and is clamped by set screws — compact, and by far the most common. A QD bushing carries a flange and bolts up from either face, which makes it quicker to release and lets you reverse-mount the wheel. Both transmit torque through a keyway plus the taper grip, so the choice is about access and serviceability, not torque capacity.

Yes — we ship bushed V-belt pulleys, timing pulleys and sprockets as a matched set, bored and keyed to your shaft, so the part arrives ready to slide on and tighten. Give us the shaft diameter and keyway, and we handle the rest.

Yes — a non-standard bore, keyway, taper angle or a weld-on hub is machined from solid bar to your drawing, typically in 15–25 days. Send the drawing, or just the shaft and wheel details, and we'll quote it.

Yes. We manufacture to the established Taper-Lock and QD dimensional patterns — same taper, same bore series, same bolt circle — so our parts drop into the equivalent installation without reworking the hub. We ship Wolfer-marked parts to those patterns, not OEM-branded ones; if you need genuine branded parts under a supplier agreement, source those from the brand.

Standard TB / QD sizes in stock ship same week from Foshan. Custom bushings are machined from solid bar in 15–25 days from drawing confirmation.

Wolfer routinely produces ISO 1328 Class 6 hobbed gears and ISO 1328 Class 5 ground gears. Class 5 requires gear-grinding after heat treatment and adds roughly 5–7 days to the lead time.

Standard envelope is up to Ø 600 mm OD. For larger gears (up to Ø 1,200 mm) we use the large-machine bay at our Foshan plant — please share the drawing for a feasibility check.

Yes — we machine acetal (POM) and PA66 nylon gears for low-noise, dry-running applications. We also injection-mold plastic gears via partner tooling for higher volumes.

Either. A STEP file plus a 2D drawing showing critical dimensions and tolerances is ideal — the STEP gives us the geometry, the 2D tells us where to hold tight tolerance and what surface finish to target.

One piece. We routinely cut replacement parts for OEMs where the original supplier has closed or discontinued the part.

Wolfer routinely produces ISO 1328 Class 6 hobbed gears and ISO 1328 Class 5 ground gears. Class 5 requires gear-grinding after heat treatment and adds roughly 5–7 days to the lead time.

Standard envelope is up to Ø 600 mm OD. For larger gears (up to Ø 1,200 mm) we use the large-machine bay at our Foshan plant — please share the drawing for a feasibility check.

Yes — we machine acetal (POM) and PA66 nylon gears for low-noise, dry-running applications. We also injection-mold plastic gears via partner tooling for higher volumes.

Two meters in a single piece on our gear grinder. For longer travels we join racks at dowelled pads and grind the assembled face — pitch matching is to ≤ 0.03 mm across the joint.

Helical racks run smoother at speeds above ~ 60 m/min and carry roughly 30% more load per face-width, at the cost of an axial thrust on the pinion bearings. For lower-speed positioning, a straight rack is simpler and slightly cheaper.

Yes — we cut the pinion from the same drawing pack as the rack, so flank profile and module are guaranteed to match. The pinion ships with the rack as a set.

Wolfer routinely produces ISO 1328 Class 6 hobbed gears and ISO 1328 Class 5 ground gears. Class 5 requires gear-grinding after heat treatment and adds roughly 5–7 days to the lead time.

Standard envelope is up to Ø 600 mm OD. For larger gears (up to Ø 1,200 mm) we use the large-machine bay at our Foshan plant — please share the drawing for a feasibility check.

Yes — we machine acetal (POM) and PA66 nylon gears for low-noise, dry-running applications. We also injection-mold plastic gears via partner tooling for higher volumes.

Two reasons: backlash and runout stack. An integral gear has no keyway clearance, so backlash is determined only by tooth-flank tolerance. And the gear pitch diameter is cut concentric to the same centers as the bearing journals, so total runout is the lowest you can get without a flange-mount bearing.

Yes — we routinely make double-gear shafts where the input pinion is m 1.5 and the output pinion is m 3. Both sections are hobbed and ground after heat treatment in the same setup.