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DIN 8187 | ISO/R 606 | C45 Carbon Steel | UK Supplier
10B-1/2/3 Sprockets — 5/8″ × 3/8″
Precision simplex, duplex and triplex chain sprockets manufactured to DIN 8187 / ISO/R 606. Tooth counts Z=8–125. Weld-on hub option available. Stocked in the UK for same-day and next-day dispatch.
A Trusted Standard in British Power Transmission
The 10B sprocket series is one of the most consistently specified chain drive components across UK manufacturing, agriculture, food processing and materials handling. Conforming strictly to DIN 8187 and ISO/R 606, these sprockets engage with the 5/8″×3/8″ pitch roller chain — the drive standard found on countless machines operating in British facilities from the East Midlands to the Scottish Highlands every day. Three sub-types cover the full load spectrum: the 10B-1 simplex for light to medium duties, the 10B-2 duplex for parallel dual-strand layouts that double torque capacity without changing shaft centres, and the 10B-3 triplex for the heaviest drives where moving up a chain pitch would force a complete drivetrain redesign. A continuous tooth count range from Z=8 through to Z=125 — covering tip diameters of 47 mm to 639.7 mm — means that even unusual gear ratios can be satisfied from catalogue stock without bespoke tooling delays. Every sprocket in the range is precision turned and profile-hobbed from C 45 carbon steel, a grade long favoured by British machine builders for its excellent combination of machinability, tensile strength and response to surface hardening, all of which translate into dependable, long-service-life performance on multi-shift production lines.
Six Reasons Engineers Specify Our 10B Sprockets
Built to standard. Stocked in the UK. Ready when you need them.
DIN 8187 & ISO/R 606 Compliance
Full conformity with DIN 8187 and ISO/R 606 guarantees dimensional interchangeability with 10B roller chain from every reputable manufacturer. Specifying by standard means no measurement surprises during scheduled shutdowns, and maintenance teams in any UK facility can procure replacement sprockets from approved stock without the risk of mismatch.
C45 Carbon Steel Construction
The C 45 grade was selected because its mechanical properties — typically Rm 700–850 MPa tensile and Rp0.2 ≥490 MPa yield — underpin robust tooth profiles that resist deformation under cyclic loading. Tooth flanks can be induction-hardened to 50–58 HRC on request, extending sprocket life dramatically in high-cycle or abrasive environments common across UK industry.
Full Z=8 to Z=125 Range
A tooth count range from 8 to 125 teeth spans tip diameters of 47 mm to 639.7 mm. This breadth allows design engineers to achieve precise speed ratios using catalogue items only, eliminating the lead times and additional cost typically associated with non-standard sprocket blanks on British manufacturing projects.
Weld-On Hub Flexibility
Larger-diameter sprockets (indicated by an asterisk in the dimension table) are supplied with a weld-on hub, allowing workshop engineers to fit them to virtually any shaft size without needing to specify a bored-to-size part. The hub can be welded, bored and keyway-broached by local engineering shops across the UK, keeping retrofit times to a minimum on urgent breakdowns.
UK Stock & Fast Delivery
Popular tooth counts are held in UK warehouse stock, supporting same-day dispatch on orders placed before the daily cut-off. This matters when a broken sprocket has stopped a production line in a Yorkshire food factory or a Midlands automotive press shop — unplanned downtime costs the UK manufacturing sector billions of pounds per year, and fast parts availability is the single most effective mitigation.
Simplex / Duplex / Triplex in One Range
Sourcing simplex, duplex and triplex variants from the same product family means consistent hub tolerances and tooth geometry, allowing engineers to upgrade a drive from single-strand to multi-strand without altering shaft or bearing positions. This single-source advantage simplifies both initial procurement and long-term spare parts management for plant maintenance departments throughout Britain.
Technical Specification
DIN 8187 | ISO/R 606 | Chain Pitch 5/8″ (15.875 mm)
Sprocket Dimensions
| Parameter | Value (mm) |
|---|---|
| Tooth radius r₃ | 16 |
| Radius width C | 1.6 |
| Tooth width B₁ | 9.1 |
| Tooth width b₁ | 9 |
| Tooth width B₂ | 25.5 |
| Tooth width B₃ | 42.1 |
Compatible Chain Dimensions
| Chain Parameter | Value (mm) |
|---|---|
| Pitch | 15.875 |
| Internal width | 9.65 |
| Roller Φ | 10.16 |
Material: C 45 carbon steel | Weld-on hub available on larger sprockets (marked * in dimension table)
Full Dimensional Data — Simplex, Duplex & Triplex (Z = 8 to 125)
| Z | dₑ (mm) | dᴜ (mm) | SIMPLEX | DUPLEX | TRIPLEX | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| dₑ (mm) | D₁ (mm) | A (mm) | dₒ (mm) | D₂ (mm) | A (mm) | dₓ (mm) | D₃ (mm) | A (mm) | |||
| 8 | 47.0 | 41.48 | 25 | 10 | 25 | 25 | 12 | 40 | 25 | 12 | 55 |
| 9 | 52.6 | 46.42 | 30 | 10 | 25 | 30 | 12 | 40 | 30 | 12 | 55 |
| 10 | 57.5 | 51.37 | 35 | 10 | 25 | 35 | 12 | 40 | 35 | 16 | 55 |
| 11 | 63.0 | 56.34 | 37 | 12 | 30 | 39 | 14 | 40 | 39 | 16 | 55 |
| 12 | 68.5 | 61.34 | 42 | 12 | 30 | 42 | 14 | 40 | 42 | 16 | 55 |
| 13 | 73.0 | 66.32 | 47 | 12 | 30 | 49 | 14 | 40 | 49 | 16 | 55 |
| 14 | 78.0 | 71.34 | 52 | 12 | 30 | 54 | 16 | 45 | 54 | 16 | 55 |
| 15 | 83.0 | 76.36 | 57 | 12 | 30 | 59 | 14 | 40 | 59 | 16 | 55 |
| 16 | 88.0 | 81.37 | 60 | 12 | 30 | 64 | 16 | 45 | 64 | 16 | 60 |
| 17 | 93.0 | 86.39 | 65 | 12 | 30 | 69 | 16 | 45 | 69 | 20 | 60 |
| 18 | 98.3 | 91.42 | 70 | 14 | 30 | 74 | 16 | 45 | 74 | 16 | 60 |
| 19 | 103.3 | 96.45 | 70 | 14 | 30 | 79 | 16 | 45 | 79 | 16 | 60 |
| 20 | 108.4 | 101.49 | 75 | 14 | 30 | 84 | 16 | 45 | 84 | 16 | 60 |
| 21 | 113.5 | 106.52 | 75 | 16 | 30 | 89 | 16 | 45 | 89 | 20 | 60 |
| 22 | 118.0 | 111.55 | 80 | 16 | 30 | 90 | 16 | 45 | 90 | 20 | 60 |
| 23 | 123.5 | 116.58 | 80 | 16 | 30 | 95 | 16 | 45 | 95 | 20 | 60 |
| 24 | 128.3 | 121.62 | 80 | 16 | 30 | 100 | 16 | 45 | 100 | 20 | 60 |
| 25 | 134.0 | 126.66 | 80 | 16 | 30 | 105 | 16 | 45 | 105 | 20 | 60 |
| 26 | 139.0 | 132.10 | 80 | 16 | 30 | 110 | 16 | 45 | 110 | 20 | 60 |
| 27 | 144.0 | 136.75 | 80 | 20 | 35 | 110 | 20 | 45 | 110 | 20 | 60 |
| 28 | 148.7 | 141.78 | 90 | 20 | 35 | 115 | 20 | 45 | 115 | 20 | 60 |
| 29 | 153.8 | 146.83 | 90 | 20 | 35 | 115 | 20 | 45 | 115 | 20 | 60 |
| 30 | 158.8 | 151.87 | 90 | 20 | 35 | 120 | 20 | 45 | 120 | 20 | 60 |
| 31 | 163.8 | 156.91 | 90 | 20 | 35 | 120 | 20 | 45 | 120 | 20 | 60 |
| 32 | 168.9 | 161.95 | 90 | 20 | 35 | 120 | 20 | 45 | 120 | 20 | 60 |
| 33 | 174.5 | 167.00 | 95 | 20 | 35 | 120 | 20 | 45 | 120 | 20 | 60 |
| 34 | 179.0 | 172.05 | 95 | 20 | 35 | 120 | 20 | 45 | 120 | 20 | 60 |
| 35 | 184.2 | 177.10 | 95 | 20 | 35 | 120 | 20 | 45 | 120 | 20 | 60 |
| 36 | 189.1 | 182.15 | 100 | 20 | 35 | 120 | 20 | 45 | 120 | 25 | 60 |
| 37 | 194.2 | 187.20 | 100 | 20 | 35 | 120 | 20 | 45 | 120 | 25 | 60 |
| 38 | 199.2 | 192.24 | 100 | 20 | 35 | 120 | 20 | 45 | 120 | 25 | 60 |
| 39 | 204.2 | 197.29 | 100 | 20 | 35 | 120 | 20 | 45 | 120 | 25 | 60 |
| 40 | 209.3 | 202.34 | 100 | 20 | 35 | 120 | 20 | 45 | 120 | 25 | 60 |
| 41 | 214.8 | 207.38 | *100 | 20 | 40 | *120 | 20 | 50 | *130 | 25 | 60 |
| 42 | 219.9 | 212.43 | *100 | 20 | 40 | *120 | 20 | 50 | *130 | 25 | 60 |
| 43 | 224.9 | 217.48 | *100 | 20 | 40 | *120 | 20 | 50 | *130 | 25 | 60 |
| 44 | 230.0 | 222.58 | *100 | 20 | 40 | *120 | 20 | 50 | *130 | 25 | 60 |
| 45 | 235.0 | 227.58 | *100 | 20 | 40 | *120 | 20 | 50 | *130 | 25 | 60 |
| 46 | 240.1 | 232.63 | *100 | 20 | 40 | *120 | 20 | 50 | *130 | 25 | 60 |
| 47 | 245.1 | 237.68 | *100 | 20 | 40 | *120 | 20 | 50 | *130 | 25 | 60 |
| 48 | 250.2 | 242.72 | *100 | 20 | 40 | *120 | 20 | 50 | *130 | 25 | 60 |
| 49 | 255.2 | 247.78 | *100 | 20 | 40 | *120 | 20 | 50 | *130 | 25 | 60 |
| 50 | 260.3 | 252.82 | *100 | 20 | 40 | *120 | 20 | 50 | *130 | 25 | 60 |
| 51 | 265.3 | 257.87 | *100 | 20 | 40 | *120 | 20 | 50 | *130 | 25 | 60 |
| 52 | 270.4 | 262.92 | *100 | 20 | 40 | *120 | 20 | 50 | *130 | 25 | 60 |
| 53 | 275.4 | 267.96 | *100 | 20 | 40 | *120 | 20 | 50 | *130 | 25 | 60 |
| 54 | 280.5 | 273.03 | *100 | 20 | 40 | *120 | 20 | 50 | *130 | 25 | 60 |
| 55 | 285.5 | 278.08 | *100 | 20 | 40 | *120 | 20 | 50 | *130 | 25 | 60 |
| 56 | 290.6 | 283.13 | *100 | 20 | 40 | *120 | 20 | 50 | *130 | 25 | 60 |
| 57 | 296.0 | 288.18 | *100 | 20 | 40 | *120 | 20 | 50 | *130 | 25 | 60 |
| 58 | 300.7 | 293.22 | *100 | 20 | 40 | *120 | 20 | 50 | *130 | 25 | 60 |
| 59 | 305.7 | 298.28 | *100 | 20 | 43 | *120 | 20 | 57 | *130 | 25 | 64 |
| 60 | 310.8 | 303.33 | *100 | 20 | 43 | *120 | 20 | 57 | *130 | 25 | 64 |
| 62 | 321.4 | 313.43 | *100 | 20 | 43 | *120 | 20 | 57 | *130 | 25 | 64 |
| 64 | 331.5 | 323.58 | *100 | 20 | 43 | *120 | 20 | 57 | *130 | 25 | 64 |
| 65 | 336.5 | 328.58 | *100 | 20 | 43 | *120 | 20 | 57 | *130 | 25 | 67 |
| 66 | 341.6 | 333.64 | *100 | 20 | 43 | *120 | 20 | 57 | *130 | 25 | 67 |
| 67 | 351.7 | 343.74 | *100 | 20 | 43 | *120 | 20 | 57 | *130 | 25 | 67 |
| 70 | 361.8 | 353.84 | *100 | 20 | 43 | *120 | 20 | 57 | *130 | 25 | 67 |
| 72 | 371.8 | 363.84 | *100 | 20 | 43 | *120 | 20 | 57 | *130 | 25 | 67 |
| 76 | 392.1 | 384.15 | *100 | 20 | 43 | *120 | 20 | 57 | *130 | 25 | 67 |
| 80 | 402.2 | 394.25 | *100 | 20 | 43 | *120 | 20 | 57 | *130 | 25 | 67 |
| 85 | 437.6 | 429.62 | *100 | 20 | 50 | *130 | 20 | 58 | *130 | 25 | 67 |
| 95 | 462.8 | 454.88 | *100 | 20 | 50 | *130 | 20 | 58 | *130 | 25 | 67 |
| 100 | 488.5 | 480.14 | *100 | 20 | 50 | *130 | 20 | 58 | *130 | 25 | 67 |
| 114 | 513.4 | 505.40 | *100 | 20 | 50 | *130 | 20 | 58 | *130 | 25 | 67 |
| 120 | 560.5 | 552.55 | *100 | 20 | 50 | *130 | 20 | 58 | *130 | 25 | 67 |
| 125 | 584.1 | 576.13 | *100 | 20 | 50 | *130 | 20 | 58 | *130 | 25 | 67 |
* Weld-on hub. dₑ/dₒ/dₓ = hub diameter (mm). D₁/D₂/D₃ = bore diameter (mm). A = hub projection (mm).
Where the 10B Sprocket Does Its Best Work
The 10B pitch — 15.875 mm — sits at a comfortable midpoint in the European roller chain range, providing enough strength for genuinely demanding drives whilst remaining compact enough to fit within the tight chassis and guarding constraints common on UK packaging machines, agricultural harvesters operating across the English countryside, and food-grade conveyors running in refrigerated distribution centres throughout the country. The C 45 steel substrate responds well to standard industrial lubrication regimes; paired with a mineral-oil drip or grease-bath system, operating life routinely exceeds 15,000 hours in controlled environments. In harsher settings — aggregates, quarrying, bulk materials handling in the North Sea supply chain — surface hardening extends tooth life considerably. The duplex and triplex variants share the same tooth spacing geometry, meaning a line upgrade from 10B-1 to 10B-2 or 10B-3 only requires changing the sprocket and chain, not redesigning the complete drive.
🍇 Food & Beverage
Conveyor drives, case erectors, filling lines
🍏 Agriculture
Combine harvesters, balers, seed drills across UK farms
📚 Printing & Paper
Web press drives, roll-to-sheet feeders, palletisers
🏭 General Engineering
Machine tools, elevators, power take-off units, pumps
⛏ Mining & Quarrying
Crushing plant drives, screening decks, extraction equipment
🚢 Materials Handling
Warehouse sorters, pallet conveyors, bucket elevators
Ever Power Manufacturing & Custom Sprocket Services
Our production facility operates precision CNC hobbing and turning centres equipped with advanced tooling capable of producing sprockets across the full 10B range and well beyond. For UK clients with requirements that fall outside catalogue dimensions — non-standard bore diameters, custom keyways, special hub lengths, surface coatings including electroless nickel or black oxide for corrosive environments, or modified tooth profiles for specific chain products — our engineering team can produce fully verified custom sprockets. We work from customer drawings, reverse-engineered samples, or collaboratively developed specifications. All custom parts are dimensionally inspected on CMM equipment and issued with material certificates and inspection reports. Minimum order quantities are flexible; Ever Power regularly supports both one-off replacement components and ongoing blanket order contracts for UK manufacturing sites. Whether you need a single replacement sprocket for a discontinued machine, or a long-term supplier agreement for 10B-2 duplex sprockets used across a production network, we have the capacity and the engineering depth to deliver. Contact our UK sales team to discuss your specification.
Proven Results Across British Industry
Three examples of how UK customers solved real drive problems using Ever Power 10B sprockets.
🇦🇬 UK Food Manufacturer — Yorkshire
Ready-meal processing facility, West Riding, England
A high-throughput ready-meal facility was experiencing premature sprocket wear every six weeks on its primary conveyor drive, traced to a combination of low-grade steel and inconsistent tooth pitch from their previous supplier. After switching to Ever Power 10B-1 simplex sprockets, the maintenance interval extended to over twelve months. The site engineers noted that the consistent bore tolerances eliminated the minor shaft wobble that had been accelerating wear on adjacent bearings as well. Annual maintenance cost reduction was estimated at over £12,000 across the affected line.
“The consistency of bore finishing and tight dimensional tolerance on every sprocket made a measurable difference almost immediately. We haven’t touched that drive in over a year.” — Maintenance Manager, Yorkshire food processing site
🇦🇬 Agricultural Machinery Dealer — East Anglia
Field machinery & spares supplier, Cambridgeshire
A specialist agricultural machinery dealer servicing Fenland farming operations needed a reliable UK source for 10B-3 triplex sprockets used in heavy-duty grain handling equipment. Lead times from European sources during seasonal peaks were unacceptable. Ever Power’s UK-stocked range provided same-day supply on the most commonly needed tooth counts, allowing the dealer to offer same-day or next-day repair completions during harvest. The weld-on hub option on larger sprockets was particularly valued because it allowed field repairs on non-standard shafts without pre-ordering bored blanks weeks in advance.
“During harvest we simply cannot wait a week for parts from the Continent. Having 10B-3 sprockets on the shelf in the UK is exactly what we needed — and the quality has been spot on every time.” — Parts Director, Cambridgeshire agricultural dealer
🇦🇬 Automotive Press Shop — West Midlands
Tier-1 stamping facility, Coventry area, England
A Coventry-area press shop running three-shift production needed to source 10B-2 duplex sprockets for transfer conveyor drives and required a supplier able to provide material certificates for their quality management system. Ever Power supplied a full batch of 10B-2 sprockets with C 45 material traceability documentation conforming to EN 10204 3.1 requirements. The ability to specify custom bore sizes without a large minimum order quantity was critical: seventeen different bore sizes were required across the site, which would have been commercially impractical with larger-volume suppliers.
“Material certs, custom bores, and a sensible MOQ — three boxes that most sprocket suppliers can’t tick simultaneously. Ever Power managed all three without fuss.” — Procurement Manager, West Midlands press shop
Ready to Source 10B Sprockets from a Reliable UK Supplier?
Send your specification — tooth count, bore size, strand (simplex/duplex/triplex) and quantity — and receive a competitive quote from our UK sales team.
✉ Get a Quote — sales@gear-chains
DIN 8187 | ISO/R 606 | C45 Steel | Z=8–125 | Simplex / Duplex / Triplex | UK Stock
edit by gzl
