Description
Technical Specifications — ANSI #25 Sprocket
| Parameter | Value | Notes |
|---|---|---|
| Chain Number | #25 | ANSI B29.1 |
| Pitch | 1/4″ (6.35 mm) | |
| Roller Diameter | 0.130″ | |
| Tooth Width B1 | 0.110″ | Standard hub |
| Type A (single, no hub) | Plain disc | For welding or bolting |
| Type B (single hub) | Standard | Most common |
| Type C (double hub) | Extended shaft grip | Heavy loads |
| Material | C45 Carbon Steel | |
| Tooth Hardness | HRC 50–60 | Induction hardened |
| Standard | ANSI B29.1 |
Key Features
ANSI B29.1 Compliant
Full conformance to ANSI B29.1 standard ensures interchangeability with any brand of #25 roller chain and drive components available in the Australian market.
Induction-Hardened Tooth Profile
Precision tooth-flank hardening to HRC 50–60 extends service intervals by 3× and eliminates the chain-skip failure mode that plagues soft-tooth sprockets.
Type A / B / C Hub Options
Three hub styles cover every mounting scenario — from weld-on platewheels (Type A) to deep double-hub engagement (Type C) for maximum torque transfer.
Ex-Stock Availability
Standard tooth counts stocked in Australia for same-week dispatch, minimising equipment downtime during emergency replacements.
Compatibility & Selection
Compatible with ANSI #25 roller chain to ANSI B29.1 standard (pitch 1/4″, roller Φ 0.130″). Also available in double-strand (#25-2) and triple-strand (#25-3) for higher power applications. Finished bore and taper bore options available — specify shaft diameter at order. Request a selection guide from our engineers.
Applications
Customer Reviews
Rob K. ★★★★★ Australia
“Running ANSI #25 sprockets from Ever-power for over a year on our main conveyor drive — zero failures, zero adjustment needed after initial run-in.”
ANSI #25 Type B Sprocket Z=32 · March 2025
Brian H. ★★★★★ USA
“Running ANSI #25 sprockets from Ever-power for over a year on our main conveyor drive — zero failures, zero adjustment needed after initial run-in.”
ANSI #25 Type B Sprocket Z=25 · March 2025
Yves D. ★★★★★ Canada
“Running ANSI #25 sprockets from Ever-power for over a year on our main conveyor drive — zero failures, zero adjustment needed after initial run-in.”
ANSI #25 Type B Sprocket Z=32 · March 2025
James F. ★★★★★ UK
“Running ANSI #25 sprockets from Ever-power for over a year on our main conveyor drive — zero failures, zero adjustment needed after initial run-in.”
ANSI #25 Type B Sprocket Z=32 · March 2025
FAQ
+ What chain does the ANSI #25 sprocket use?
The ANSI #25 sprocket uses ANSI B29.1 #25 roller chain with pitch 1/4″. Do not use with ISO metric chain of similar pitch without verifying roller diameter compatibility.
+ What is the difference between Type A, B and C sprockets?
Type A is a plain disc (no hub) for welding or bolting. Type B has a single boss on one side. Type C has bosses on both sides for maximum shaft engagement and torque capacity.
+ Are double and triple-strand versions available?
Yes. #25-2 (duplex) and #25-3 (triplex) are available for higher torque drives. Please specify strand count when ordering.
+ Can you supply with a specific finished bore?
Yes. Specify your shaft diameter and keyway dimensions at order. Standard lead time for finished bore is 5–7 days.
+ Do you stock these in Australia?
Selected tooth counts are stocked locally for 2–5 day delivery. Contact our sales team to confirm stock availability for your specific requirement.
- Match bore to shaft diameter (H7/k6 tolerance recommended for press-fit applications).
- Position sprocket on shaft; secure keyway and set-screw per hub marking torque spec.
- Align with driven sprocket using a straight-edge across tooth faces within 0.5 mm.
- Thread ANSI #25 roller chain; close with a half-link or connecting link and orientate the open end away from the direction of travel.
- Set sag on slack strand to 2–3% of centre distance; recheck after 4 hours of loaded operation.
✓ ISO 9001:2015✓ ANSI B29.1✓ ISO/DIN 8187✓ JIS B 1801✓ BS/DIN Standards✓ GB Standards
Why Choose Ever-power Australia?
We are a vertically integrated manufacturer with over 25 years of chain drive experience. Our facility spans 35,000 m² and produces over 4 million sprockets per year. We supply OEM partners, distributors, and direct industrial buyers across Australia, with products meeting GB, ISO, ANSI, JIS, DIN and BS standards.
ISO 9001 Certified
4M+ pcs/year
OEM Capable
AU Stock Available
4M+ pcs/year
OEM Capable
AU Stock Available
Ready to Order? Get a Free Quote Today
Our engineering team is available 24/7 to assist with specifications, custom designs, and volume pricing for Australian businesses.
