German KBK/BKK series metal bellows safety coupling

Company Introduction:

KBK Antriebstechnik GmbH is a German transmission technology company with over 50 professional employees, and its scale continues to expand with continuous development. The company's products have undergone quality control, internal testing, and high-precision manufacturing, laying the foundation for high-quality and durable products. Its quality management system has passed annual audits and obtained ISO 9001:2015 certification

Customized solutions: Based on modular systems, customized solutions can be quickly and cost effectively implemented according to customer needs. If the standard product cannot meet the customer's application, a new design can be carried out, including calculation and development work

Product Introduction

KBK/BKK series metal bellows safety coupling

1. Core structure

Metal bellows: made of stainless steel material, electron beam welded, zero backlash, high torsional stiffness, compensating for axial/radial/angular deviations.

Clamping wheel hub: made of aluminum alloy, with no keyway and quick installation. It is locked with screws for easy installation.

Torque limiting module: Built in precision friction mechanism, automatically slips and disengages when overloaded, protecting the motor and load; After disconnection, it can automatically reset (D-type multi-point/C-type single point).

2. Technical parameters (standard range)

Torque range: 0.2-500 Nm (adjustable)

Shaft diameter range: 3-70 mm (H7 tolerance)

Outer diameter: 29-129 mm; total length: 35-140 mm

Maximum speed: up to 12000 rpm (according to specifications)

Working temperature: -30 ℃~+120 ℃

Protection level: IP40 (standard)

Reset type: D=multi-point reset (360 ° arbitrary engagement); C=Single point reset

3. Advantages of KBK/BKK products

Zero backlash: bellows transmission, no backlash, precise servo positioning.

Overload protection: preset torque, overload slip, protect equipment from damage.

Deviation compensation: Three way compensation for shaft alignment error, reducing bearing load.

Maintenance free: Stainless steel corrugated tube+aluminum alloy wheel hub, lifetime lubrication free.

Quick installation design: clamp the wheel hub, no keyway, efficient installation and disassembly.

4. Typical applications

Servo motor/stepper motor connected to ball screw

Encoder, sensor precision shaft coupling

Joint drive for small robots and automation equipment

Precision testing instruments and laboratory equipment

Packaging machinery, electronic manufacturing equipment

5. Same series models

BKK: Standard type, clamped wheel hub, torque 0.2-500 Nm.

BKA: Automatic for medium-sized, high clamping force, suitable for neutral deviation scenarios.

BKI: High rigidity type, suitable for medium load and high dynamic response working conditions.

BKPK/BJPI: Small torque compact type, torque 0.2-10 Nm, dedicated for micro servo

6. Model Example

KBK/BKK-05-29-03H7-03H7-0.5Nm-D-2

KBK/BKK-07-38-04H7-06H7-2Nm-D-2

KBK/BKK-10-65-06H7-08H7-10Nm-D-2

KBK/BKK-15-80-08H7-10H7-20Nm-D-2

KBK/BKK-15-80-10H7-12H7-30Nm-C-2

KBK/BKK-20-95-12H7-14H7-50Nm-D-2

KBK/BKK-25-110-14H7-16H7-80Nm-D-2

KBK/BKK-30-125-18H7-20H7-150Nm-D-2

KBK/BKK-40-129-25H7-28H7-300Nm-D-2

KBK/BKK-40-129-30H7-30H7-500Nm-D-2

German KBK/BKK series metal bellows safety coupling