This product is registered by Katayama Chain, Co., Ltd..
About This Product
The span box uses a special resin (Material "S") for the chain guide, which is more wear-resistant and durable than steel. Maintenance-free and automatically maintains proper tension at all times, increasing chain drive performance and lifespan.
Span Box SB2 type has increased surface pressure in the chain guide section for high load transmission of No. 80 and No. 100 chains.
Types SB1 and SB2 have three built-in springs, and the tension can be set by the number of springs to be released.
*Spring retaining bolt
*Tension load is set by opening. Please provide a space at the bottom where you can tighten the bolts with a flat head screwdriver.
*See page 439 for load classification (tension) and transfer section shape and dimensions.
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