Description
Dimensions
Product Specifications
| Product Name | 20A-G1 Rubber Top Chain (Rubber Top Roller Chain) |
| Chain Material | Alloy Steel 45Mn · 42CrMo · 20CrMo Stainless Steel SS304 · SS316 OEM Custom material on request |
| Rubber Material | NBR nitrile butadiene rubber — oil & chemical resistant NR natural rubber — superior elasticity & vibration damping |
| Rubber Hardness | Shore A 65–75 (standard) · Shore A 75–85 (hard grade) |
| Surface Treatment | Shot peening · Blackening · Bluing · Zinc-plated · Nickel-plated · Polishing |
| Characteristics | Oil resistant · Heat resistant · Fire resistant |
| Design Standard | ISO · DIN · ANSI · Customer drawings accepted |
| Related Sizes | 20B-G1 · 20B-G2 · 24B-G1 · other pitches & duplex configs on request |
| Applications | Plywood mills · Wood product factories · Food processing · Packaging lines · Inclined conveyors |
| Quality Certificate | ISO 9001:2015 |
| Packaging | Wooden case / container & pallet, or made-to-order |
| Lead Time | Samples ≈ 20 days · Bulk orders ≈ 45 days ex-works |
What Is a 20A-G1 Rubber Top Roller Chain?
A rubber top roller chain is a standard precision roller chain with vulcanised rubber pads bonded onto the outer link plates. The 20A-G1 follows ANSI/ISO designation conventions: 20A indicates a pitch of 31.75 mm (equivalent to the ANSI #100 series), and G1 denotes a single-strand (simplex) configuration. The rubber overlay converts an ordinary drive chain into a conveyor element that grips, transports, and positions workpieces without slippage — even on inclines up to 30–40°, depending on compound hardness and load.
Chain plates and rollers are manufactured in alloy steel (45Mn, 42CrMo, 20CrMo) as standard, with stainless steel (SS304, SS316) available for food-grade or corrosive environments. All steel components undergo shot peening to introduce compressive residual stresses that extend fatigue life under cyclic conveyor loads.
The rubber pads are available in NBR (nitrile butadiene rubber — oil, grease, and mild chemical resistant) or NR (natural rubber — superior elasticity and surface protection, preferred in woodworking). Two hardness grades, Shore A 65–75 and 75–85, allow engineers to match grip level to product weight and conveyor speed.
Key Performance Advantages
Vulcanised rubber pads create reliable friction between chain and workpiece, holding boards, cartons, or bottles firmly on inclined conveyor sections where bare steel would allow slippage.
Alloy steel components are shot-peened to ISO tolerances. The rubber compound resists abrasion from wood dust, packaging debris, and particulate ingress, protecting both the pad and the underlying plate.
The rubber layer damps impact energy between product and chain, preventing jostling on high-speed packaging lines and protecting delicate items such as glass containers and electronics enclosures.
Rubber pads absorb impact noise at the product contact point and attenuate chain-to-guide-rail impact — important in food-grade facilities and automated warehouses where operators work near conveyor lines all shift.
Lubrication intervals match standard roller chain schedules. Individual links are replaceable without removing the entire run — no need for full belt changeouts or complicated tension re-calibration.
Matching Sprockets
Hardened C45 steel, induction-hardened tooth flanks. Tooth gap sized for 19.05 mm roller; 31.75 mm pitch spacing. Recommended for runs exceeding 500 hours/year.
Plastic or cast iron acceptable at low-load idler positions, further reducing noise and cost. Always verify pitch match — mismatched sprockets accelerate wear and risk tearing rubber pads.
Available Rubber Top Chain Series
Why Source from roller-chain-manufacturers.com?
Ready to Request a Quote?
Send us your required chain length, quantity, rubber compound (NBR / NR), hardness grade, and surface treatment. We will reply with a quotation and technical datasheet within one business day.
edit by gzl
