Description
The 12A-G1 rubber top chain is an ISO-standard roller chain with vulcanized rubber pads bonded to the outer face of each roller. The elastomer crown eliminates direct metal-to-surface contact, making it a non-marking conveyor chain: it moves finished wood panels, float glass, synthetic laminates, painted automotive parts, and food packaging without leaving scratches, pressure marks, or contamination. The rubber layer also absorbs sprocket-engagement impulse noise, reducing airborne sound compared with bare-steel chains on the same conveyor frame.
At roller-chain-manufacturers.com we supply the 12A-G1 in carbon steel and stainless steel (SS304, SS316), with rubber pads in NBR (nitrile — oil and grease resistant) or NR (natural rubber — high grip), Shore hardness 65–75 or 75–85. All chains comply with ISO 606 / DIN 8187 / ANSI B29.1 and are manufactured under ISO 9001:2015.
Full Dimensional Specifications
| 12A-G1 Chain — ISO 606 Dimensions | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chain No. | Pitch P (mm) |
Roller Ø d1 (mm) |
Inner Width b1 (mm) |
Pin Ø d2 (mm) |
Pin Length L (mm) |
Plate Ht h2 (mm) |
Attch. A (mm) |
Attch. B (mm) |
Attch. H (mm) |
Plate T (mm) |
Tensile Str. Q (kN / lbf) |
Weight (kg/m) |
| 12A-G1 | 19.050 | 11.91 | 12.57 | 5.94 | 29.9 | 18.00 | 21.40 | 37.05 | 21.0 | 1.85 | 31.8 / 7,153 | 2.55 |
Materials & Configuration
Key Features
🛡️
Non-Marking Rubber Crown
Vulcanized rubber bonded to each roller protects lacquered wood, float glass, PVC panels, and clearcoat finishes from pressure marks and abrasion.
🔇
Noise & Vibration Damping
The elastomer absorbs sprocket-engagement impact energy, cutting airborne noise versus bare-steel chains — valuable where workplace noise limits apply.
⚡
31.8 kN Tensile Strength
ISO-compliant link geometry delivers the same load rating as a standard 60 (ANSI) chain — the rubber top adds protection without sacrificing capacity.
🔬
Two Rubber Grades
NBR resists petroleum oils and lubricants; NR provides higher friction for inclined or high-speed lines. Shore 65–75 or 75–85 balances grip against wear life.
🧼
Stainless Steel / Washdown Ready
SS304 / SS316 body + NBR pad option for food-grade conveyors, beverage bottling, and pharma packaging where CIP detergent washdown is routine.
🔧
Drop-in Sprocket Compatibility
Uses the ISO 12A / ANSI 60 tooth profile. Existing sprockets need not be replaced when retrofitting a bare-steel conveyor with rubber-top chain.
Typical Applications
| Industry | Use Case | Why Rubber Top Chain |
|---|---|---|
| Wood & Panel | MDF / plywood / laminate lines | Zero surface marking on finished faces |
| Glass Processing | Float glass cutting & tempering | Soft contact prevents micro-cracks |
| Food & Beverage | Bottling, canning, bakery lines | SS + NBR for washdown; non-contaminating |
| Packaging Machinery | Case packers, shrink tunnels | Prevents carton scuffing and creasing |
| Automotive | Paint-line & trim-assembly conveyors | Protects clearcoat from contact marks |
| Electronics | PCB & display-panel transport | Low-vibration handling, no component shift |
Matched 12A-G1 Sprockets
We supply hardened-tooth sprockets machined to the ISO 12A tooth profile (19.05 mm pitch) in three materials: C45 carbon steel (standard), 40Cr alloy steel (heavy-duty, tooth-hardened), and SS304 (food/pharma). Available bore styles include plain bore, keyway, QD bushing, and taper-lock; tooth counts 9T–120T held in stock.
Note: A worn or incorrect tooth profile will prematurely damage rubber pads even while the steel chain body remains serviceable. Contact our engineering team if you need a sprocket specification confirmed before ordering.
Order & Delivery
Samples
20 days
Production Order
45 days
Certification
ISO 9001:2015
Packaging
Wooden case / Pallet / Custom
Factory-direct · OEM accepted · ISO 9001:2015
Ready to Request a Quote?
Send us your quantity, rubber grade (NBR / NR), chain material, and conveyor layout details. Response within one business day.
edit by gzl
