Description
Hangzhou Ever-Power Sprocket Co., Ltd.
The #40 pitch is the single most common chain size in global industrial machinery. Getting the stainless upgrade right — hub type, grade, bore — is what this page is for.
The World’s Most Common Chain Drive Pitch
If you walk through any industrial facility in the world — a food factory, a packaging hall, a chemical plant, an automotive assembly line — the single most likely chain drive you will encounter runs on ANSI 40 (12.7 mm / 1/2-inch pitch). That universal adoption is no accident: the #40 pitch strikes an ideal balance between compact tooth dimensions, generous load capacity, and the availability of off-the-shelf hardware from dozens of manufacturers. When specifying a stainless steel upgrade for an existing #40 drive, the dimensional compatibility is guaranteed — our Ever-Power #40 Stainless Steel Sprockets are machined to ANSI B29.1 class A tolerances, making them drop-in replacements for Browning, Martin, Dodge, Tsubaki, and any other ANSI-compliant manufacturer’s hardware. The decision process then focuses entirely on hub type, SS grade, and surface finish — and that is exactly what this page walks you through.
Hub Type Selection: A / B / C / Taper-Lock — Which One Fits Your Installation?
The most common specification error when replacing sprockets is ordering the wrong hub type — which costs time and return freight. The ANSI hub-type system is straightforward once you understand what each configuration solves:
Flat plate, no hub projection either side. Use when axial space is very tight or when mounting to a flanged shaft end, coupling, or custom bracket. Thin profile, lightest weight.
Hub projects to one side only. The most common general-purpose choice — allows the chain centreline to sit close to a bearing support. Fits the majority of retrofit situations.
Hub projects both sides. Maximum bore engagement length for high-torque applications where shaft gripping area must be maximised. Also useful where the sprocket position must be centred on the shaft.
Bushed hub with taper-lock QD or SDS bushing. The fastest option for shaft removal during maintenance — loosen three screws and the sprocket slides off without disturbing adjacent components. Ideal for high-maintenance environments.
Technical Specifications
| Parameter | Value |
|---|---|
| Chain No. | ANSI 40 |
| Pitch | 12.7 mm (1/2″) |
| Roller Diameter | 7.92 mm |
| Material | 304 SS / 316 SS |
| Tooth Range | 9T – 96T |
| Hub Styles | Type A / B / C / Taper-Lock / Split |
| Compliance | ANSI B29.1 Class A, ISO 9001:2015 |
Direct Replacement Cross-Reference
Our #40 SS sprockets are dimensionally equivalent to all ANSI B29.1-compliant manufacturers. Common cross-reference prefixes:
| Brand | Part Number Format | Notes |
|---|---|---|
| Browning | 40S[teeth] | Direct dimensional match |
| Martin | 40SS[teeth] | Confirm hub type before ordering |
| Tsubaki | 40B[teeth]SS | Verify inner width on older series |
| Rexnord / Dodge | Varies by series | Send OEM part number for confirmation |
Parts & Components We Also Supply
- ANSI 40 SS Roller Chain — 304 and 316, single- and double-strand
- Taper-Lock Bushing Sets — 1008 through 3020 taper series
- 40H Heavy Series SS Chain — for applications near the upper power boundary
- SS Chain Guards — 1.5 mm 304 sheet metal with inspection windows
- A2-70 Fastener Sets — set screws and socket bolts for hub assembly
Customer Reviews
“Switched our poultry line from Browning to Ever-Power 316 SS #40 sprockets. Two years on: zero corrosion, planned maintenance interval extended from 3 months to 8. The quality is genuinely comparable.”
“Ordered taper-lock hub #40 SS sprockets for a quick-change maintenance setup. Three-screw removal works perfectly. Full inspection report and MTR provided — our auditors were satisfied.”
“Good quality, keyway cut to spec — no rework needed. The cross-reference guide on the website helped us identify the right hub type before ordering. Would benefit from faster stock dispatch.”
Request a Quote for #40 Stainless Sprockets
+86-571-88220653 | [email protected] | SHENHUA ROAD, HANGZHOU, CHINA
See our complete range of corrosion resistant sprockets or learn more on our About Us page.
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