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  • R+W miniature bellows coupling MK4
  • R+W miniature bellows coupling MK4
R+W miniature bellows coupling MK4

With radial fixing nut and conical press-in part

Specification: 0.5-10Nm

Can be installed axially


Contains a complete disassembly slot



Standard configuration: with clamping collar and a side screw ISO4762.

Option (MKH ): Separate clamping collar, two collar halves can move in the same direction

Temperature range: -30 to +120° C C

Clearance: shaft sleeve connection 0.01-0.05 mm

Service life: Operate in accordance with technical specifications, the miniature bellows coupling can be durable and maintenance-free


The bellows is made of highly elastic stainless steel

Ring material: aluminum

technical parameter:

Rated torque: 0.5-10 Nm

The speed can reach 10,000 rpm.

> 10000 revolutions per minute, when using dynamic balance

Shaft diameter is 3-24 mm

Special solutions for miniature bellows couplings: such as other mating lengths, keyways, special materials and bellows can be provided on request in a short time.

Features of MK4 type miniature bellows coupling:

Zero backlash, torsional rigidity

With misalignment compensation function

Strong adhesive connection by clamping collar

Suitable for highly dynamic applications

Small moment of inertia

SIZE 5 15 20 45 100
Rated torque 0.5 1.5 2 4.5 10
Overall length (inserted) 22/25/28 26/31 28/33/37 39/47 46/56
Inside diameter possible 3-9 3-12 3-16 6-22 6-28
Inside diameter possible 3-6.35 3-9 3-12.7 6-16 6-20
Moment of inertia 2.0/2.2/2.5 5.5/6.0 21/23/25 80/85 200/210
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