PEER Chain
PEER Chain 40A9 - ANSI 40, 9T A-Hub
Model: 40A9

PEER Chain 40A9 A-hub roller chain sprocket. Single strand, ANSI #40 (0.5" pitch) chain, 9 teeth. Carbon steel with hardened teeth, black oxide finish standard. ISO 9001 certified manufacturing. Meets ANSI B29.1 standard.
Technical Specifications
| ANSI Number | 40 |
| Teeth | 9 |
| Hub Style | Type A |
| Bore Type | Plain Bore |
| Bore Size | Pilot |
| Bore Range Max | 2.4375 |
| Hardened Teeth | Yes |
| Pitch Diameter (in) | 1.462 |
| Outer Diameter (in) | 1.774 |
| Material | Carbon Steel |
| LTB (in) | 0.525 |
| Strand | Single |
| Standard | ANSI B29.1 |
| Finish | Black Oxide |
Manufacturer

PEER Chain
PEER Chain — family-owned manufacturer of ANSI roller chain, PEER Quest solid-bushing chain, and matching sprockets. Serves industrial, agricultural, and material handling applications across ANSI #25–#240.
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