BoWex® FLE-PA Couplings with 42 Teeth – KTR BoWex 65 FLE-PA

The BoWex 65 FLE-PA is a torsionally stiff curved-tooth flange coupling from KTR-Kupplungstechnik, designed with 42 inner teeth. Teeth count is directly linked to the flange size, and in this case, the 42 teeth configuration corresponds to size 65.

This coupling is widely applied in construction machinery, generators, and marine auxiliary drives, where a reliable connection between the diesel engine and the driven pump or gearbox is required. Manufactured in D-4440 Rheine, Germany, every original element carries the identification KTR, BoWex, FLE-PA, >PA6-GF25<, certifying OEM quality.

Key Specifications:

Size: BoWex 65 FLE-PA
Inner teeth count: 42 teeth
Nominal torque (TKN): 650 Nm
Maximum torque (TKmax): 1,600 Nm
Standard SAE sizes: 8″, 10″, 11.5″
Design: Torsionally stiff, maintenance-free
Material: Polyamide >PA6-GF25< with steel hub

Why teeth count matters:

The 42 teeth profile ensures proper meshing with the flywheel, providing accurate alignment and secure torque transfer. Correct teeth geometry is essential for preventing vibration, reducing wear, and extending the lifetime of both coupling and engine.

⚠️ Non-original elements may seem cheaper, but they often lack correct teeth geometry, stiffness, or material quality. For equipment worth hundreds of thousands of euros, even a small mismatch can cause costly breakdowns and downtime. Only original KTR BoWex couplings guarantee safe operation.