KCM 32B-2 BS Roller Chain Duplex, 2 in Pitch, 5 ft Box

BS duplex roller chain from KCM. The KCM catalogue lists BS-series chain with the ISO 606 minimum tensile strength alongside KCM's own minimum.

AIMS Industrial supplies it in boxed lengths of 5 ft (1.52 m). This listing covers 1 size (32B). KCM's 2017.04 catalogue does not publish dimensions or strength figures for this type, so only the chain number and pitch are listed here.

Where this product is used

• General power transmission drives
• Conveyor and material handling drives
• Agricultural and farm machinery
• Replacing worn or broken chain on existing drives

Features

• Conforms to ISO 606-B; KCM lists it for Europe-built equipment
• Spring-type connecting links for 03 to 12B and split-pin type for 16B to 24B
• Two-pitch offset links for sizes 03, 04 and 05B

Key specifications

Available sizes

Selecting the right option

For BS chain the number is the pitch in sixteenths of an inch: 08B is 8/16 in (1/2 in), 12B is 12/16 in (3/4 in), 16B is 1 in. The figure after the dash is the number of strands.

This is KCM standard (carbon steel) BS chain. KCM also lists stainless steel BS chain (05B to 16B) where corrosion, heat or cleanliness rules out carbon steel.

Fitting and use

Tensile strength is the load at which the chain breaks in one pull and is not a working load. Use the maximum allowable load for working loads and choose chain with the selection method in the KCM catalogue.

KCM's replacement guideline, based on measured elongation, is 1.5% where the larger sprocket has 60 teeth or fewer, 1.2% for 61 to 80 teeth, 1.0% for 81 to 100 teeth and 0.8% for 101 or more, where take-up is possible. With fixed shaft centres it is 0.5% to 0.7%.

Insufficient lubrication promotes wear of pins and bushings, which leads to elongation. KCM says to lubricate the clearances between inner and outer links and between the rollers and inner links.

KCM says not to replace damaged parts of a chain with new ones. Replace the whole chain, and check the sprockets when changing chain.

Check that a safety cover is fitted before running a chain drive.

Related products

Matching connecting links: KCM BS Roller Chain Connecting Link Duplex 05B-32B. Matching offset links: KCM BS Roller Chain Offset Link (Half Link) Duplex 05B-32B.