Description
Hangzhou Ever-Power Sprocket Co., Ltd.
ANSI B29.1 is a public standard. Every manufacturer who claims Class A compliance is making the same pitch-diameter, tooth-form, and bore-tolerance commitment. The procurement argument is about documentation quality, lead time, and price — not about which logo is on the hub.
The Substitution Case: What You Need to Switch Suppliers
Changing the supplier of a critical drive component requires engineering sign-off in most industrial facilities. That sign-off depends on three things: proof that the replacement part meets the same dimensional standard, proof of material grade, and a working part that passes incoming inspection without rework. We make every element of that sign-off as simple as possible. Our ANSI 40 SS sprockets are machined to ANSI B29.1 Class A tolerances — the same standard that Browning, Martin, and Tsubaki comply with. The mill test report that ships with every order confirms the material grade in the same EN 10204 3.1 format that most procurement quality systems accept. The CMM dimensional report documents pitch diameter, bore, and keyway against the standard — your incoming QC team can verify in one inspection session. Most customers complete supplier qualification within 2–4 weeks of receiving the first sample.
Cross-Reference: Our Part vs. the Brand You Are Currently Buying
| Your Current Brand | Their Part Format | Ever-Power Equivalent | Dimensional Standard |
|---|---|---|---|
| Browning | 40S[teeth][hub] | 40SS-[teeth]-[bore]-[hub] | ANSI B29.1 Class A ✓ |
| Martin Sprocket | 40SS[teeth] | Direct dimensional match | ANSI B29.1 Class A ✓ |
| Tsubaki | 40B[teeth]SS | Confirm inner width series | ANSI B29.1 Class A ✓ |
| Rexnord / Dodge | Varies by product line | Send OEM part # for confirmation | ANSI B29.1 Class A ✓ |
Send us your current OEM part number at [email protected] — we will provide a written confirmation of equivalence before you place an order.
Technical Specifications
| Parameter | Value |
|---|---|
| Chain No. | ANSI 40 |
| Pitch | 12.7 mm (1/2″) |
| Roller Dia. | 7.92 mm |
| Material | 304 SS / 316 SS |
| Tooth Range | 9T – 96T |
| Hub Options | Type A / B / C / Taper-lock / Split |
| Bore Tolerance | H7 standard |
| Compliance | ANSI B29.1 Class A, ISO 9001:2015 |
The Documentation Toolkit for Engineering Sign-Off
Getting a new supplier approved through your engineering department requires a predictable set of documents. We prepare all of these as standard — you do not need to request them separately:
Heat-specific chemical composition and mechanical properties. Same format as the MTR your current supplier provides.
Pitch diameter, bore diameter, keyway dimensions measured on calibrated CMM. 100% inspection.
Third-party certified quality management system. Certificate copy with every order package.
Written statement confirming equivalence to your named OEM part number, for your approved-supplier file.
Parts for the Complete #40 SS Drive System
Consolidate your stainless steel sprocket drive sourcing with one qualified supplier:
- ANSI 40 SS Roller Chain — 304 and 316, single and double strand
- Taper-Lock Bushing Sets — 1008 through 3020 series
- 40H Heavy Series SS Chain — for drives near the upper power boundary
- SS Chain Guards — 1.5 mm 304 sheet metal with inspection window
- A2-70 Fastener Sets — SS set screws and cap bolts
Customer Reviews
“Our engineering team approved the switch from Browning to Ever-Power in one week after reviewing the CMM report. The cross-reference letter simplified the approved-supplier addition process significantly.”
“Incoming QC checked the bore with our gauge: H7 tolerance confirmed. Tooth-form visual check against chain: perfect seating. The product is exactly what the spec sheet says it is.”
“We compared sample units from three suppliers. Ever-Power had the tightest bore tolerance and the most complete documentation package. Now our sole-source supplier for ANSI 40 SS.”
Get a Cross-Reference Quote in 24 Hours
Send your current OEM part number — we confirm equivalence and price before you commit to anything.
+86-571-88220653 | [email protected]
Explore our corrosion resistant sprocket range or learn about our company on the About Us page.
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