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  • Sprockets for Top Chains

Sprockets for BT8 Chain

Solid sprockets for BT8 plastic modular chain.

BT8 sprockets are made to fit loosely on the shaft to absorb differences in thermal expanasion between the chain and conveyor, and alignment errors between the sprockets and chain.

  • Available with 12T and 18T.
Sprockets for BT8 Chain

1. Line-up

Type Solid Sprockets
Basic model no. BT8-12T-25 BT8-18T-25 BT8-18T-40, 50, 65
Applicable chains BTC8, BTC8-A (* Cannot be used with BTO8-M chain.)
Shape BT8-12T-25 BT8-18T-25 BT8-18T-40
Material Reinforced polyamide
No. of teeth 12 18 18
Bore shape Round Round Square
  • BT8 sprockets (square bore) have an alignment mark for phase matching.
  • The number of BT8 sprockets installed, and positions where BT8 sprockets are installed, will vary depending on load conditions.
  • Made-to-order product.
  • Contact a Tsubaki representative when considering BT8-12T-25 or BT8-18T-25 sprockets.
  • Cannot be used with BTO8-M chain. Use Sprockets for BTO8-M chain.

2．Reference Number System

Reference Number System
  1. (1) Chain type
  2. (2) No. of teeth: 12T = 12, 18T = 18
  3. (3) Bore diameter: mm
  4. (4) Bore shape: [Blank] = Round, S = Square