1. DKN- Miniature Metal Bellows Couplings
Servo Quality: Extremely high torsional stiffness. For use anywhere position accuracy is absolutely critical. Excels in high speed reversing applications, with no need to de-value coupling ratings.
Shaft Misalignment: Reduces bearing wear by compensating for lateral, angular and axial shaft misalignments.
Low Inertia: Stainless Steel bellows and Aluminum hubs keep the weight low, which keeps inertia to an absolute minimum.
Cost Savings: Manufactured in Chicago, IL. Rimtec DKN couplings are very price competitive, and their superior performance saves money in the long run by reducing bearing wear and machine downtime.
DKN Miniature Metal Bellows Coupling with Collet Clamp

2. DKN- Miniature Metal Bellows Couplings

3. DKN Dimensions (mm)
STANDARD BORE SIZES: 3 mm, 6 mm, 8 mm, 10 mm, 12 mm, 14 mm, ¼”, 3/8”, ½”, 5/8”, ¾”.
Hubs made of AlCuMgPb, available in steel on request.
Transmission of the coupling’s nominal torque (M) is only quaranteed for bore sizes within the recommended range with standard H7 bore tolerances, unless otherwise specified. Other special bores can, however, be supplied by the manufacturer. All hub bores are supplied to fit standard H7 according to the customer’s data.
Clearance of keyway, standard Js 9.

4. DKN Technical Ratings
The dimensioning of the couplings is always based on the peak torque (Mmax) which is to be transmitted regularly by the drive motors.
For basis of the calculation of the coupling’s rated torque, see ordering data.
The couplings, under no circumstances, should be submitted to a torque greater than 2.5 times the rated torque.