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Ever Power · Precision Drive Technology · United Kingdom
Triplex Roller (SS) Chains & Bushing (SS) Chains
Triple-strand stainless steel power transmission — engineered for industries where standard carbon steel simply cannot perform. Compliant with DIN/ISO and ANSI standards, available in full-range pitches from 6.35 mm to 76.2 mm, and supported by our in-house customisation capability for UK and global OEM clients.
What Are Triplex Roller (SS) Chains and Bushing (SS) Chains?
Triplex roller (SS) chains are triple-strand precision drive chains manufactured entirely from austenitic stainless steel — typically Grade 304 or Grade 316 — making them ideally suited to environments that demand both high tensile strength and resistance to corrosion. Unlike standard duplex or simplex variants, the triplex configuration delivers three parallel rows of link plates, pins, rollers, and bushings working in unison. The result is a load capacity that no single-strand chain can match, while maintaining the compact dimensional profile required in most industrial drive assemblies.
The bushing (SS) chain variant — often called a bushing chain rather than a roller chain — replaces the free-rolling outer cylinder with a fixed hardened bushing that contacts the sprocket tooth directly. This design reduces component count and mass while maintaining excellent wear characteristics. In food processing, pharmaceutical packaging, and chemical handling lines across the UK, bushing SS chains are frequently preferred where the absence of external rollers simplifies cleaning procedures and reduces the risk of particle entrapment in hygienic applications.
Both chain types conform to DIN/ISO and ANSI dimensional standards, enabling direct replacement of existing carbon steel transmissions without sprocket modification. Pitches in our standard range begin at 6.350 mm (DIN/ISO *04CSS-3 / ANSI *25SS-3) and extend to 76.200 mm (48ASS-3 / 240SS-3), covering the overwhelming majority of industrial drive requirements encountered across British manufacturing, water treatment, marine engineering, and energy sectors.
Why Engineers and Procurement Teams Choose Ever Power SS Chains
01 / Corrosion Resistance
Stainless Steel Throughout
Every component — inner plates, outer plates, pins, rollers, and bushings — is produced from SS304 or SS316. Grade 316 versions provide superior chloride resistance, making them the correct specification for marine, coastal, and saline process environments throughout the UK, including North Sea offshore support and Scottish aquaculture facilities.
02 / Load Capacity
Triple-Strand Tensile Strength
The triplex configuration multiplies ultimate tensile strength versus single-strand equivalents. The 48ASS-3 / 240SS-3 chain achieves a minimum breaking load of 765.45 kN — adequate for the most demanding continuous-duty conveying applications in heavy industry, steel processing, and large-format packaging machinery.
03 / Standards Compliance
DIN/ISO and ANSI Dual-Certified
Full compliance with DIN/ISO 606 and ANSI/ASME B29.1 guarantees dimensional interchangeability. British engineering teams specifying replacement chains can match existing sprocket geometry without re-engineering drive assemblies, minimising planned maintenance downtime across production lines.
04 / Hygiene
Food-Grade & Washdown Ready
Stainless steel construction withstands aggressive CIP (clean-in-place) cycles, high-pressure steam cleaning, and contact with acidic or alkaline sanitising agents. Bushing variants reduce surface cavities where bacteria can harbour, supporting compliance with UK Food Standards Agency guidelines and BRC Global Standards in food manufacturing plants.
05 / Temperature
Wide Operating Temperature Range
Grade 316 SS triplex chains retain mechanical integrity from -40 °C to +400 °C. This makes them a reliable choice in freezer tunnel conveyors, industrial ovens, foundry handling equipment, and high-temperature chemical process lines — environments where carbon steel chains would rapidly oxidise and carbon steel lubricants carbonise.
06 / Service Life
Extended Wear Life
Precision-ground pin and bushing surfaces, together with controlled interference fits, minimise elongation under cyclic load. Combined with an induction-hardened roller surface, customers consistently report significantly longer replacement intervals compared with standard carbon steel equivalents, reducing total cost of ownership over the full asset lifecycle.
Technical Specifications — Triplex (SS) Roller & Bushing Chains
All dimensions in millimetres (mm). Breaking load (Q min) in kilonewtons (kN). Weight per metre (q) in kg/m. *Bushing chain: d1 denotes external diameter of the bushing.
| DIN/ISO Chain No. | ANSI Chain No. | Pitch P (mm) | Roller dia. d1 max (mm) | Width b1 min (mm) | Pin dia. d2 max (mm) | Pin length L max (mm) | Pin length Lc max (mm) | Inner plate h2 max (mm) | Plate thick. T max (mm) | Trans. pitch Pt (mm) | UTS Q min (kN) | Weight q (kg/m) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| *04CSS-3 | *25SS-3 | 6.350 | 3.30 | 3.18 | 2.31 | 21.0 | 21.5 | 6.00 | 0.80 | 6.40 | 5.25 | 0.44 |
| *06CSS-3 | *35SS-3 | 9.525 | 5.08 | 4.77 | 3.58 | 32.7 | 33.5 | 9.00 | 1.20 | 10.13 | 11.85 | 1.05 |
| 08ASS-3 | 40SS-3 | 12.700 | 7.95 | 7.85 | 3.96 | 45.4 | 46.6 | 12.00 | 1.50 | 14.38 | 21.15 | 1.90 |
| 10ASS-3 | 50SS-3 | 15.875 | 10.16 | 9.40 | 5.08 | 57.0 | 58.5 | 15.09 | 2.00 | 18.11 | 33.3 | 3.09 |
| 12ASS-3 | 60SS-3 | 19.050 | 11.91 | 12.57 | 5.94 | 71.5 | 73.3 | 18.00 | 2.40 | 22.78 | 47.7 | 4.54 |
| 16ASS-3 | 80SS-3 | 25.400 | 15.88 | 15.75 | 7.92 | 91.7 | 93.6 | 24.00 | 3.00 | 29.29 | 85.05 | 7.89 |
| 20ASS-3 | 100SS-3 | 31.750 | 19.05 | 18.90 | 9.53 | 112.2 | 116.3 | 30.00 | 4.00 | 35.76 | 132.75 | 11.7 |
| 24ASS-3 | 120SS-3 | 38.100 | 22.23 | 25.22 | 11.10 | 141.4 | 145.2 | 35.70 | 4.80 | 45.44 | 190.5 | 17.53 |
| 28ASS-3 | 140SS-3 | 44.450 | 25.40 | 25.22 | 12.70 | 152.2 | 156.8 | 41.00 | 5.60 | 48.87 | 258.6 | 22.20 |
| 32ASS-3 | 160SS-3 | 50.800 | 28.58 | 31.55 | 14.27 | 181.8 | 186.6 | 47.80 | 6.40 | 58.55 | 340.2 | 30.02 |
| 36ASS-3 | 180SS-3 | 57.150 | 35.71 | 35.48 | 17.46 | 204.4 | 210.2 | 53.60 | 7.20 | 65.84 | 420.35 | 38.22 |
| 40ASS-3 | 200SS-3 | 63.500 | 39.68 | 37.85 | 19.85 | 223.5 | 230.4 | 60.00 | 8.00 | 71.55 | 530.7 | 49.03 |
| 48ASS-3 | 240SS-3 | 76.200 | 47.63 | 47.35 | 23.81 | 271.3 | 278.6 | 72.39 | 9.50 | 87.83 | 765.45 | 49.03 |
*Bushing chain: d1 in the table indicates the external diameter of the bushing. *号表示套简链.
Material Composition, Working Principle & Application Environments
How the Chain Works
In a triplex roller chain, three parallel chains are assembled onto common pins. As each pin engages the sprocket tooth profile, radial load is distributed equally across all three strands. The free-spinning roller reduces sliding friction to rolling friction at the tooth interface, substantially lowering heat generation, noise, and wear rate. In the bushing variant, the absence of the outer roller simplifies the geometry and reduces inertia, benefiting high-speed, lighter-load applications where low mass is a priority over absolute tensile capacity.
Stainless Steel Grades
SS304 (18% chromium, 8% nickel) suits general industrial use, moderate chemical exposure, and temperatures up to approximately 870 °C in intermittent service. SS316 adds 2–3% molybdenum, increasing resistance to pitting caused by chlorides and sulfurous acids. For UK clients operating near coastal installations, in water treatment works, or in marine engineering facilities, SS316 is the specified grade. Components are cold-drawn, pressed, and assembled without compromising the corrosion-resistant passive oxide layer that gives stainless steel its defining characteristic.
UK Industry Applications
Triplex (SS) chains are used across British food and beverage processing lines in the Midlands and Yorkshire, pharmaceutical conveying systems in the South East, North Sea offshore deck equipment, Scottish fish processing facilities, Welsh water treatment infrastructure, and London-area printing and packaging machinery. The bushing (SS) chain variant is particularly common on precision indexing conveyors in electronics assembly plants and on labelling machines where chain mass must be minimised to allow rapid acceleration and deceleration cycles.
Customer Success — Real-World Results with Ever Power SS Chains
The following case demonstrates what we regularly see when clients transition from carbon steel to our triplex stainless steel chain range:
Case Study · Yorkshire · Food Processing · 2023
Reducing Unplanned Downtime on a High-Throughput Poultry Processing Line, West Yorkshire
A large poultry processing facility operating three high-throughput evisceration lines near Leeds was experiencing unplanned chain failures every six to eight weeks. The existing carbon steel duplex chains were corroding rapidly in the high-pressure hot-water washdown environment, causing link plate cracking and, on two occasions, complete strand fracture during production — a safety and hygiene incident that triggered a full-line shutdown and regulatory review.
After consultation with our application engineering team, the client retrofitted 16ASS-3 (80SS-3) triplex roller (SS) chains to all three lines. The triple-strand configuration provided a safety margin well above the calculated cyclic load, and the SS316 grade withstood the 85 °C caustic cleaning solution used during daily sanitisation. Sprocket tooth geometry required no modification, as the DIN/ISO dimensional compliance of our 16ASS-3 chain matched the existing 80-pitch sprockets directly.
Over the subsequent 14 months of operation, zero chain-related failures were recorded. Planned replacement intervals were extended from six weeks to over nine months, and the reduction in unplanned downtime translated to a measurable improvement in OEE (Overall Equipment Effectiveness) across all three lines.
“We’ve been sourcing triplex SS chains from Ever Power for our canning line conveyors in Glasgow for three years. Delivery has always been on time, and the dimensional accuracy is consistently within tolerance. For a Scottish manufacturer running 24/7, that reliability is not optional.”
James R., Head of Engineering
Beverage Manufacturing, Glasgow, Scotland
“Our pharmaceutical conveying system requires validated stainless steel components with full traceability. Ever Power provided material certificates and test reports with each shipment — something many chain suppliers simply do not offer at this price point. We’d recommend them to any UK pharma manufacturer.”
Dr. Sarah M., Facilities Manager
Contract Pharmaceutical Manufacturing, Hertfordshire, England
“The custom chain length and attachment specifications Ever Power manufactured for our offshore deck crane system were exactly to drawing. Lead time was discussed upfront and met without issue. Good communication throughout — better than some domestic UK suppliers I’ve used previously.”
Peter T., Procurement Director
Offshore Marine Engineering, Aberdeen, Scotland
Ever Power Manufacturing & Custom Chain Services
Ever Power operates a fully integrated production facility where all critical chain components — link plates, bushings, rollers, and pins — are manufactured under a single roof using precision cold-forming, CNC turning, and coordinate measuring verification. This vertical integration allows us to control every aspect of dimensional accuracy and material traceability, which is particularly important to UK clients operating under ISO 9001 quality management systems or sector-specific audit requirements such as BRCGS or FDA-aligned pharmaceutical manufacturing standards.
Our customisation capability extends well beyond standard catalogue sizes. If your application demands a non-standard pitch, a modified attachment link, extended pin ends, hollow pins for lube-free lubrication systems, or side-bow configurations for curved conveyor paths, our engineering team can produce a complete production drawing within three working days of receiving your application data. Minimum order quantities for custom triplex SS chains are competitive, and we maintain stock of the most common standard variants for rapid despatch to UK distribution addresses.
Custom Options Available
Modified attachment links (A1, A2, K1, K2) · Extended or hollow pin ends · Non-standard pitch and strand width · Lube-free / self-lubricating variants · Extended-length cut-to-measure coils · Branded packaging for OEM integration · Material certificates and dimensional inspection reports
UK Supply Chain
Standard stock items despatch within 48 hours to UK addresses · Dedicated account managers for British industrial and OEM clients · Competitive landed pricing with full UKCA documentation available on request · Ongoing stock agreements for large-volume procurement
Frequently Asked Questions
What is the price of a triplex stainless steel roller chain and how can I get a quote for supply to a UK food factory?
Pricing for triplex (SS) chains depends on the chain number, quantity, and whether the specification is standard catalogue or a custom configuration. The most commonly requested sizes for food processing applications in the UK — typically 08ASS-3 through 20ASS-3 — are held in stock and can be quoted same day. Send your DIN/ISO or ANSI chain number, required quantity, and delivery postcode to [email protected] and our team will respond with a formal quotation within 24 hours.
Where can I find a reliable stainless steel triplex roller chain supplier who can deliver to Scotland or remote parts of the UK quickly?
Ever Power ships standard-range triplex (SS) chains to all UK mainland postcodes, including Scotland and the Highlands, typically within two to three working days from confirmed order. For offshore or island deliveries — Shetland, Orkney, and the Hebrides are areas we regularly service — we coordinate with specialist freight forwarders. Contact us in advance if you have a time-critical requirement and we will advise the most practical despatch arrangement.
How do I know which SS chain grade — 304 or 316 — is the right choice for my application in a UK coastal or marine environment?
The primary deciding factor is chloride exposure. If the chain operates within 5 km of a coastline, is exposed to seawater spray, or is used in a process that involves chlorinated cleaning agents or saline solutions, SS316 is strongly recommended over SS304. SS316’s molybdenum content provides meaningfully better resistance to pitting corrosion in these conditions. For inland freshwater treatment plants and general food factories without chloride-heavy processes, SS304 triplex chains provide excellent service at a lower cost.
What is the difference between a triplex roller chain and a bushing chain, and when should I specify each type for a UK pharmaceutical conveyor?
A triplex roller (SS) chain uses a free-spinning roller around the outer bushing, which reduces friction significantly and is best suited to moderate-to-high speed drives with larger centre distances. A bushing (SS) chain omits the outer roller — the hardened bushing contacts the sprocket tooth directly. In pharmaceutical conveying, the bushing variant is frequently chosen because it has fewer inter-component cavities, makes deep cleaning simpler, and the reduced mass per metre benefits servo-driven precision indexing systems. For heavy conveying duties with larger loads, the roller chain maintains an efficiency advantage.
Can Ever Power supply custom-length triplex SS chains with special attachments for an OEM machine builder in the UK Midlands, and what is the lead time?
Yes — custom triplex (SS) chains with A1, A2, K1, or K2 attachments, hollow pins, extended pin ends, or non-standard pitches are available. Our standard lead time for custom configurations is 15–25 working days depending on complexity and volume. OEM machine builders in the Midlands, and across the UK, are among our primary customers for this service. Submit a drawing or dimensional specification to [email protected] and our engineering team will confirm feasibility and pricing within three business days.
Ever Power · Stainless Steel Drive Chain · United Kingdom
Ready to specify your triplex (SS) chain for your next UK project?
Send us your chain number, required quantity, and any customisation requirements. We will respond with a detailed quotation, material certification availability, and a realistic delivery schedule to your UK address.
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