Conveyors and Precision Roller Chains
Poly-steel chains
US standard (ASA)
Catalog » Conveyors and Precision Roller Chains » CMW chains » Poly-steel chains
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The inside links of Poly-steel chains are made of moulded polyacetal plastic and the outer links of 18/8 stainless steel. As a result, the advantages of the two materials are combined in the same chain. Compared with steel or stainless steel chains, Poly-steel chains offer 3 advantages:
1) lubrication completely unnecessary (when dry they have a higher level of resistance than a stainless steel chain).
2) the sound level is less than 5 dB.
3) its weight per metre is less than half.
* Cranked links are not available. Therefore the chain must have an even number of links.
* These chains operate with standard ASA sprockets. The quick attachments are the same as those used for stainless steel chains except for quick attachments with a 6.35 mm and 9.52 mm pitch which are specific. Similarly, all bent-link plates or straight plates are the same as used for stainless steel chains.
* The chain tension should be checked when a stainless steel chain is replaced with a poly-steel chain. The tension should not exceed the values indicated below.
* The operating temperature can range from -20° to +80°C. The maximum speed is 70 metres per minute.
* Without lubrication, the friction coefficient between the chain and guide rail is 0.25. It is the lower part of the links that should be in contact with the guide rail.
* Colour of inside links: white (brown on request).
| Dimensional specifications for Poly-steel ASA chains | |||||||||||||
| Single chains | |||||||||||||
| standard | Pitch (P) | Inside width | Roller diam. | Pin diam. | Inside plate height | Outer plate height | Inside plate thickness | Outer plate thickness | Width over rivets | Max. width | Force utile max. | Net weight | |
| ASA | ANSI | (mm) | L | D1 | D6 | H | H1 | S | S1 | F1 | 1/2F1 +F2 | (daN) | (kg/ml) |
| - | 25 | 6,35 | 3,18 | 3,30 | 2,31 | 6,0 | 5,1 | 1,30 | 0,75 | 9,0 | 10,0 | 8 | 0,1 |
| 06A-1 | 35 | 9,52 | 4,78 | 5,08 | 3,59 | 9,0 | 7,8 | 2,20 | 1,25 | 13,7 | 14,7 | 18 | 0,2 |
| 08A-1 | 40 | 12,7 | 7,95 | 7,95 | 3,97 | 12,0 | 10,4 | 1,50 | 1,50 | 16,5 | 18,2 | 44 | 0,4 |
| 10A-1 | 50 | 15,87 | 9,53 | 10,16 | 5,09 | 15,0 | 13,0 | 2,00 | 2,00 | 20,6 | 22,3 | 69 | 0,6 |
| 12A-1 | 60 | 19,05 | 12,70 | 11,91 | 5,96 | 18,1 | 15,6 | 2,40 | 2,40 | 25,7 | 27,6 | 88 | 0,8 |
