FREE delivery on orders over €150
Product Specifications:
| Item | Roller Chain Sprocket |
| Bore Diameter | 7/8" |
| Bore Type | Finished Bore |
| Chain Number | 40 |
| Chain Pitch | 1/2" |
| Construction | Welded |
| Construction Type | Welded |
| Finished Bore Size | 7/8" |
| For Chain Number | 40 |
| For Chain Pitch | 1/2" |
| Hub Configuration | B |
| Hub Diameter | 3 1/2" |
| Hub Outside Dia. | 3 1/2" |
| Individually Packaged | No |
| Keyway Size | 3/16" x 3/32" |
| Length Through Bore | 1 1/8" |
| Length Thru Bore | 1 1/8" |
| Material | Steel |
| Number Of Chain Rows | 1 |
| Number Of Teeth | 55 |
| Outside Dia. | 9.044" |
| Pitch | 1/2" |
| Pitch Dia. | 8.7583" |
| 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 | 1.13" |
| Storage Dimension Length | 9.044" |
| Storage Dimension Width | 9.044" |
Shipping Info:
| Ship weight (kg) | 2.88 |
| Ship height (cm) | 2.87 |
| Ship length (cm) | 22.96 |
| Ship width (cm) | 22.96 |
| Country of Origin | US |
Product Variants
| Product | Model | Number Of Teeth | Pitch Dia. | Outside Dia. | Length Through Bore | Set Screw Size | Set Screw Location | Bore Size | For Chain Number | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
![]() |
40BS9 1/2 | 9 | 1.4619" | 1.674" | 7/8" | #10-24 | (2) 90° Apart (No Keyway) | 1/2" | 40 | €29.33 | |
![]() |
40BS9 5/8 | 9 | 1.4619" | 1.674" | 7/8" | 1/4"-20 | (1) Over Keyway And (1) At 90° | 5/8" | 40 | €29.33 | |
![]() |
40BS10 1/2 | 10 | 1.618" | 1.839" | 7/8" | #10-24 | (2) 90° Apart (No Keyway) | 1/2" | 40 | €30.42 | |
![]() |
40BS10 5/8 | 10 | 1.618" | 1.839" | 7/8" | 1/4"-20 | (1) Over Keyway And (1) At 90° | 5/8" | 40 | €30.42 | |
![]() |
40BS10 3/4 | 10 | 1.618" | 1.839" | 7/8" | 1/4"-20 | (1) Over Keyway And (1) At 90° | 3/4" | 40 | €30.42 | |
![]() |
40BS11 1/2 | 11 | 1.7747" | 2.003" | 7/8" | #10-24 | (2) 90° Apart (No Keyway) | 1/2" | 40 | €31.80 | |
![]() |
40BS11 5/8 | 11 | 1.7747" | 2.003" | 7/8" | 1/4"-20 | (1) Over Keyway And (1) At 90° | 5/8" | 40 | €31.80 |
Explore Products
- HUB CITY 0220-77486 Right Angle Worm Gear Speed Reducers, 143-5TC Input Flange, Hollow Bore Output
- ECEF 669000772 Power Bit Set, 6,35mm Size Hex Shank
- SPEARS VALVES 3320-628P Cross, Socket, 125 PSI, PIP, 10 x 8 Size, PVC
- GENERAL TOOLS & INSTRUMENTS LLC 616 Ruler Stainless Steel 6 Inch Length
- ELDON JAMES C12-8AGPP Reduction Coupler, 3/4 x 1/2 Inch Inside Dia., Antimicrobial Non Animal Derived Polypropylene
- SK PROFESSIONAL TOOLS 45114 Socket 3/8 Inch Drive 7/16 Inch 6 Point Standard
- FANTECH FKD 10 Mixed Flow Fan, 10 Inch Duct With Metal Housing, 909 cfm, 120V
Explore More
- KEYSHAFT
- MASTER PRODUCTS
- DAZOR
- ALCO FILTERS
- MILES LUBRICANTS
- Ropes
- Oil Filter Wrenches
- Electric Hoists
- Lubrication Pumps
- Fire Hose Pin Rack Assemblies
- PLAST-O-MATIC PRAM Series Air Loaded Pressure Regulators
- CONDOR High Visibility Orange Palm Gloves
- DESTACO 604 Series Straight Line Action Clamps
- PROTO Impact Socket, 1 Inch, Metric, Alloy Steel
- KEO Long Series Metric Combined Drills And Countersinks, 60 Degrees Countersink Angle, Cobalt
- VULCAN HART Counter Weight Arm
- LEESON General Purpose Agricultural Duty Motors, Single Phase, TEFC, Rigid Base
- GEDORE Interchangeable Torque Wrench Heads
- KM SYSTEMS Wrenches
- MERIT BRASS 2112 Brass Nipples, Lead-Free, Schedule 40
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 40BS55 7/8 Roller Chain Sprocket, Bore To Size, 0.875 Inch Bore, 9.044 Inch Outside Dia. Steel
€136.54 /unit







