Beskrivelse
Hangzhou Ever-Power Sprocket Co., Ltd.
Precision ANSI 25 stainless steel chain sprockets — engineered for hygiene-critical and corrosive environments worldwide.
Produktoversikt
De Hangzhou Ever-Power #25 Stainless Steel Sprocket is machined to exacting ANSI 25 chain standards, delivering pitch-perfect engagement across a full range of bore sizes and tooth counts. Fabricated from 304 or 316 stainless steel depending on application demand, each sprocket resists rust, pitting, and chemical attack — making it the natural choice wherever carbon steel fails prematurely. Whether installed in a food conveyor system, a pharmaceutical packaging line, or a coastal marine application, this sprocket maintains dimensional integrity and smooth chain travel over extended service cycles. Our in-house CNC turning and hobbing operations hold tooth profile tolerances to within ±0.02 mm, ensuring quiet meshing and minimal chain wear from day one.
Tekniske spesifikasjoner
Every #25 stainless steel sprocket we produce is dimensioned directly against ANSI B29.1 standards. Chain pitch is 6.35 mm (1/4 inch), roller diameter 3.30 mm, and inner width 3.18 mm. Available tooth counts range from 9T through 72T to accommodate speed ratios across virtually every conveyor and drive application. Bore options include standard, finished bore with keyway, and taper-lock hub configurations. All surface contact areas are polished to Ra 1.6 µm or better to reduce chain link wear and facilitate washdown cleaning in food-grade environments.
| Parameter | Specification |
|---|---|
| Kjedestandard | ANSI 25 |
| Kjedeavstand | 6,35 mm (1/4″) |
| Materiale | 304 SS / 316 SS (valgbar) |
| Tannområde | 9T – 72T |
| Hubtype | Plain bore / Finished bore+keyway / Taper-lock |
| Overflatefinish | Ra ≤ 1.6 µm (polished) |
| Hardness | HRC 20–25 (heat-treated option) |
| Cert / Compliance | ISO 9001:2015, ANSI B29.1 |
Why Stainless Steel Matters for Roller Chain Sprockets
Carbon steel sprockets can develop surface rust within weeks when exposed to moisture, cleaning agents, or saline air — and that rust transfers grit directly into chain joints, accelerating wear exponentially. Stainless steel eliminates that failure mode entirely. Grade 304 provides robust general corrosion resistance covering the majority of industrial washdown chemicals, while 316 adds molybdenum for superior resistance to chlorides found in marine environments and certain food brines. Beyond corrosion, both grades maintain strength at elevated temperatures up to 870 °C (intermittent), giving engineers confidence in applications with thermal cycling. The low magnetic permeability of austenitic stainless is also valuable in proximity-sensor zones of automated assembly lines.
304 vs. 316 — Choosing the Right Grade
For standard food conveyor and pharmaceutical packaging applications, 304 SS delivers excellent value: it resists most organic acids, alkalis, and detergents at a lower material cost. Upgrade to 316 SS when the operating environment includes saltwater spray (marine decks, offshore platforms), concentrated chloride cleaning solutions, or continuous exposure to acidic food products such as citrus or vinegar brines. When in doubt, specify 316 — the cost differential is small relative to the downtime cost of premature failure.
Manufacturing Process
Our production flow combines modern CNC machining with rigorous quality checkpoints to ensure every sprocket ships correctly.
Viktige applikasjonssektorer
The compact pitch of the #25 chain family makes it ideal for precision, lighter-duty drive systems where chain contact zones must stay free of contamination. Typical installations include:
| Sektor | Typical Use | Why SS Required |
|---|---|---|
| Mat og drikke | Bottle conveyor, packaging indexing | USDA / FDA hygiene compliance |
| Farmasøytisk | Overføring av blisterpakning, tablettbelegg | No particle contamination |
| Marin / Offshore | Deck winch, anchor chain tensioner | Saltwater corrosion prevention |
| Elektronikkmontering | SMT-transportør, PCB-håndtering | Ikke-magnetisk, partikkelfri |
Compatible Parts & Companion Components
A complete tannhjul i rustfritt stål drive system goes beyond the sprocket itself. Hangzhou Ever-Power supplies the full component set to minimize your sourcing effort:
- ANSI 25 Stainless Steel Roller Chain — matched-grade chain for zero galvanic pairing risk
- Split Taper Bushings — QD and SDS bushing sets compatible with our taper-lock hub sprockets
- Lederhjul — plain-bore SS idlers for tensioning and guide duties
- Chain Connectors & Half Links — stainless master links to complete the drive assembly
- Stainless Shaft Keys — pre-cut to DIN 6885 dimensions, matching your bore keyway
Custom Engineering Options
Standard catalogue sizes cover the majority of applications, but our engineering team regularly produces custom configurations for OEM customers and plant retrofits. Common modifications include non-standard tooth counts, step-hub profiles for existing shaft arrangements, lightening holes to reduce rotating mass, and special bore tolerances for interference-fit assemblies. All custom orders are supported by a 2D/3D drawing review before production begins, and first-article samples are available for approval prior to full batch manufacture. Minimum order quantities for custom work start at 10 pieces; repeat orders can be shipped from pre-machined blanks for faster turnaround.
What Our Customers Say
“Replaced our OEM Martin sprockets with Ever-Power 316 SS units on our crab-processing line. Six months in, zero rust and chain wear is negligible. Dimensional accuracy was spot-on — dropped straight in without any machining.”
“We source #25 SS sprockets for our pharmaceutical tablet-press transfer conveyors. Ever-Power consistently delivers on time with full material certs. Surface finish on the bore is excellent — no fretting on the shaft.”
“Good quality stainless roller chain sprockets at a price point that makes budgeting easy. Lead time on custom bore was 12 days — reasonable. Would prefer a faster standard-stock option for emergency spares.”
Klar til å bestille eller trenger du et tilpasset tilbud?
Contact Hangzhou Ever-Power Sprocket Co., Ltd. — SHENHUA ROAD, HANGZHOU, CHINA
📞 +86-571-88220653 | ✉ [email protected]
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