Description
40B45 Roller Chain Sprocket, #40 Chain, 45 Teeth, B Hub
The 40B45 is a 45-tooth sprocket for ANSI #40 roller chain with a B style hub, machined from steel. Machined from solid stock, never sintered or powdered metal, which matters on sprockets where tooth wear sets the replacement interval.
Specifications
| Specification | Value |
|---|---|
| Part Number | 40B45 |
| Chain Size | ANSI #40 |
| Teeth | 45 |
| Hub Style | B |
| Strands | 1 |
| Outside Diameter | 7.45 in |
| Pitch Diameter | 7.168 in |
| Bore | 3/4 in minimum plain bore |
| Maximum Bore | 2.375 in |
| Material | Steel (no sintered or powdered metal) |
| Weight | 5.3 lb |
| Country of Origin | China |
Applications
- Roller chain drives on conveyors and material handling equipment
- Agricultural machinery and implement drives
- Packaging machinery and light industrial drives
Chain Compatibility
ANSI #40 is a standardized roller chain size, so the 40B45 runs #40 chain from any manufacturer in the same pitch.
Cross Reference
The 40B45 interchanges with these equivalent part numbers, per published manufacturer interchange data:
| Manufacturer | Equivalent Part Number |
|---|---|
| Dodge® | 105046 |
| Martin | 40B45 |
| US Tsubaki | 40B45 |
| Regal Rexnord (Browning®) | 40B45 |
| Ametric | 40B45 |
| McMaster-Carr | 2590K49 |
| Powerdrive | 40B45 |
Always verify dimensions and bore size before substituting part numbers across manufacturers.
Buying in bulk? Save on volume.
Multi-unit and OEM quantities qualify for volume discounts. Call or email for a quantity quote.
Frequently Asked Questions
What chain does the 40B45 sprocket run?
ANSI #40 roller chain. The size is standardized, so #40 chain from any manufacturer fits.
Does the 40B45 replace the Dodge 105046?
Yes. Published interchange data crosses the 40B45 directly to the Dodge 105046, as well as Martin 40B45, US Tsubaki 40B45, Regal Rexnord 40B45. Verify dimensions and bore before ordering.
Does the 40B45 ship from Houston?
Yes. Stock items ship same day from our Houston, Texas warehouse. Call (888) 203-2358 to confirm availability.
All third-party part numbers and trademarks referenced are the property of their respective owners. References are for compatibility identification only and do not imply affiliation or endorsement.
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