SKU: AC-4012 Chain Couplings

4012 PILOT BORE CHAIN COUPLING

Original price was: £21.12.Current price is: £15.84.

ex. VAT · £19.01 inc. VAT
JS9 Tight Fit Anti-Roll H7 Precision Transition Fit ISO 9001 Quality Assured
In Stock — Dispatches within 24 hours. Bulk orders (10+) available — call for lead time.
Technical Specifications
Weight
1kg
Min Bore Capacity
12
Max Bore Capacity
20
Chain Size
40-2
Casing OD A
78
Casing Width B
72
Assembled Width C
78
Hub Length D
36
Hub Diameter E
31
Bolt Centres F
61
Torque Ratings Nm
210
Weight
1kg
Dimensions (L × W × H)
7.8 × 3.2 × 3.2 cm
Overall envelope
Standards & Fit
JS9
JS9 Keyway Tight fit anti-roll standard
H7
Precision Transition Fit Precision bore fit
ISO
ISO 9001:2015 Quality Assured
ParameterValueNotes
SKU AC-4012 Aroflex part number
Weight 1kg
Min Bore Capacity 12
Max Bore Capacity 20
Chain Size 40-2
Casing OD A 78
Casing Width B 72
Assembled Width C 78
Hub Length D 36
Hub Diameter E 31
Bolt Centres F 61
Torque Ratings Nm 210
Weight 1 kg
Dimensions 7.8 × 3.2 × 3.2 cm Overall envelope
Bore Tolerance H7 Precision transition fit
Material Steel / Friction disc Standard construction
Certification ISO 9001:2015 Quality assured

4012 PILOT BORE CHAIN COUPLING

High-Torque Performance & Maximum Durability

The 4012 Pilot Bore Chain Coupling is a robust, all-metallic power transmission solution designed for heavy-duty industrial environments. Engineered with two precision-machined sprockets joined by a rugged Duplex Chain, this coupling delivers superior strength and a significantly higher torque capacity than standard elastomeric alternatives.

Featuring induction-hardened teeth for maximum wear resistance, its compact design allows you to handle exceptional torque loads even within tight spatial constraints.


Chain Coupling Diagram

Key Benefits & Features

  • Built for Strength: All-metallic construction with hardened sprocket teeth ensures extra durability and an extended operational lifespan.
  • Space-Saving Efficiency: High torque density means smaller, more compact couplings can be selected because the torque capacity exceeds the normal torque transmitted by the largest shaft size.
  • Effortless Maintenance: Both drive and driven shafts can be coupled or uncoupled simply by detaching a single chain link. This allows for quick inspections, easy maintenance, and independent drive rotation checks without risking damage to your driven equipment.
  • Premium Housing Protection: The coupling is protected with a split Aluminium Casing fitted with high-quality seals and gaskets. It retains crucial lubrication to extend coupling life while keeping contaminants out—just undo the cap heads on either side for instant access to the duplex chain.
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