FREE delivery on orders over €150
Product Specifications:
| Item | Roller Chain Sprocket |
| Bore Dia. | 7/8" |
| Bore Size | 7/8" |
| Bore Type | Finished Bore |
| Chain Number | 40 |
| Chain Pitch | 1/2" |
| Chain Size | #40 |
| Construction | Solid |
| Construction Type | Solid |
| Finished Bore Size | 7/8" |
| For Chain Number | 40 |
| For Chain Pitch | 1/2" |
| Hub Configuration | B |
| Hub Dia. | 3 1/4" |
| Hub Outside Dia. | 3 1/4" |
| Individually Packaged | Yes |
| Key Way Size | 3/16" x 3/32" |
| Length Thru Bore | 1" |
| Material | Steel |
| No. Of Chain Rows | 1 |
| No. Of Teeth | 25 |
| Outside Dia. | 4.258" |
| Pitch | 1/2" |
| Pitch Dia. | 3.989" , 3.9894" |
| Screw Size | 1/4"-20 x 1/4" |
| Set Screw Location | (1) Over Keyway And (1) At 90° |
| Set Screw Size | 1/4"-20 |
| Set Screw Thread Type | Coarse |
| Single Strand Tooth Thickness | 0.284" |
| Storage Dimension Height | 1.06" |
| Storage Dimension Length | 4 5/16" |
| Storage Dimension Width | 4 5/16" |
| Type | Bored to Size Type BS |
Shipping Info:
| Ship weight (kg) | 1.11 |
| Ship height (cm) | 2.69 |
| Ship length (cm) | 10.82 |
| Ship width (cm) | 10.82 |
| Country of Origin | US |
Product Variants
| Product | Model | Pitch Dia. | No. Of Teeth | Length Through Bore | Hub Dia. | Bore Dia. | Length Thru Bore | Set Screw Size | Key Way Size | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
![]() |
40BS9 1/2 | 1.462" | 9 | 7/8" | 1 1/8" | 1/2" | 7/8" | #10-24 | 1/8" x 1/16" | €29.33 | |
![]() |
40BS9 5/8 | 1.462" | 9 | 7/8" | 1 1/8" | 5/8" | 7/8" | 1/4"-20 | 3/16" x 3/32" | €29.33 | |
![]() |
40BS10 1/2 | 1.618" | 10 | 7/8" | 1 1/4" | 1/2" | 7/8" | #10-24 | 1/8" x 1/16" | €30.42 | |
![]() |
40BS10 5/8 | 1.618" | 10 | 7/8" | 1 1/4" | 5/8" | 7/8" | 1/4"-20 | 3/16" x 3/32" | €30.42 | |
![]() |
40BS10 3/4 | 1.618" | 10 | 7/8" | 1 1/4" | 3/4" | 7/8" | 1/4"-20 | 3/16" x 3/32" | €30.42 | |
![]() |
40BS11 1/2 | 1.775" | 11 | 7/8" | 1 3/8" | 1/2" | 7/8" | #10-24 | 1/8" x 1/16" | €31.80 | |
![]() |
40BS11 5/8 | 1.775" | 11 | 7/8" | 1 3/8" | 5/8" | 7/8" | 1/4"-20 | 3/16" x 3/32" | €31.80 |
Explore Products
- GLOBE SCIENTIFIC TC-PLT-12-NT Multiple Well Plate, 12 Well, Flat Bottom, Non-treated
- APPROVED VENDOR U04104.062.0850 Hex Head Cap Screw, 5/8 In - 11 Thread Size, Steel, 8 1/2 In Lg., 25/64 In Head Ht., Gr. 8
- PARKER PFTM-5A-NBR-G1
- APPROVED VENDOR U20300.050.7200 Threaded Rod, 1/2 In - 13 Thread Size, Carbon Steel, 6 ft. Lg., Gr. A, Zn Plated
- TEADIT SW304304P.112.300IR Metalflex Spiral Wound Gasket, 913M, 1-1/2 Inch Size, 300# Class, 304/PTFE Winding
- GRAINGER ZUSAH3X140 O-Ring, 140 mm Inside Dia, 146 mm Outside Dia, 146 mm Actual Outside Dia
- ELDON JAMES P16GFBN Threaded Plug, 1 NPT Size, Glass Filled Black Nylon
- SMC VALVES CDQ2B20-15+30DZ-XC11 Compact Cylinder
Explore More
- KEYSHAFT
- W F HARRIS LIGHTING
- TECHNIKS
- MARTINS INDUSTRIES
- DURASPIN
- Submersible Sewage Pumps
- Pin and Sleeve Devices
- Drawstring Trash Bags
- Retaining Ring Assortments
- Motor Control Accessories
- MSI Crane Dynamometer
- MEMPHIS GLOVE Cut Pro PU Work Gloves
- CONDOR Thecla Anti-Scratch Safety Glasses
- CHICAGO PNEUMATIC Positive Clutch & Direct Drive Screwdrivers
- HEDLAND Flow Meters For Water-Based Fluids
- VERMONT GAGE Go Standard Thread Plug Gages, 1 1/16-12 Un
- PASLODE Brite Low Carbon Steel Pneumatic Fasteners
- APPROVED VENDOR 25mm Length Round Undersized Machine Key
- CALBRITE Stainless Steel Hubs
- PBC LINEAR Double Plain Linear Bearing Housing, Square Flanged
Contact us
Contact your account manager right away to get personal advice.
We're available Monday through Friday, from 07:30 until 17:00.
MARTIN SPROCKET 40BS25 7/8 Roller Chain Sprocket, Bore To Size, 0.875 Inch Bore, 4.258 Inch Outside Dia. Steel
€90.95 /unit







