R+W Bellow Couplings BK1, BK2, BK3, BK5, BK6, BK7, BKH, BKL, BKC, BKM, BKS, SP3

Product Details

R+W Bellow Couplings are high-precision, torsionally rigid, backlash-free shaft couplings designed for servo drives, CNC machinery, automation systems, robotics, encoders, and precision motion applications.Manufactured from high-grade aluminum or stainless steel hubs with a flexible stainless steel bellow element, these couplings ensure exact torque transmission while compensating for axial, angular, and lateral misalignments — maintaining alignment accuracy and vibration-free motion. R+W bellows couplings are globally recognized for their zero backlash, lifetime balance, and maintenance-free performance. The stainless steel bellow design absorbs misalignments without reducing torsional stiffness, ensuring long life under dynamic conditions. ⚙️ Types & Model Series Each series of R+W BK / SP bellows couplings serves a distinct application type and mounting requirement: ModelDescription / Mounting TypeTypical Application BK1 Clamping hub both sides Servo & stepper motor drives, compact assemblies BK2 Clamping hub + keyway hub General automation, machine tools BKH Heavy-duty high torque bellows coupling Printing presses, metal forming, large servos BKL Lightweight version Robotics, pick-and-place systems BKC Compact series Encoder feedback systems, small precision drives BKM Modular with split hub Easy maintenance / quick assembly BKS Short hub version Tight installation spaces BK3 One side clamping hub, one side taper bush High torque servo applications BK5 Keyway + clamping combo Robotics, servo actuators BK6 Split hub both sides Easy installation on pre-assembled shafts BK7 High rigidity compact design High-speed servo drives SP3 Safety coupling with bellows Torque overload protection, servomotor systems BK1-10, BK1-15, BK1-20, BK2-30, BK2-40, BK3-50, BK5-60, BK6-80, BK7-100, BKL-20, BKC-25, BKH-150, SP3-10, SP3-15, SP3-20 Bore sizes 3 mm to 60 mm, with torque 0.5 Nm up to 1,500 Nm, ParameterRange Torque Capacity 0.5 Nm to 1500 Nm Max Speed Up to 10,000 RPM Misalignment Tolerance Angular ±1°, Axial ±1 mm, Radial ±0.2 mm Bore Range 3 mm to 60 mm (custom available) Temperature Range -30°C to +120°C Material Aluminum Alloy / Stainless Steel Hubs, Stainless Steel Bellows R+W bellow coupling, BK1 BK2 BK3 BK5 BK6 BK7 BKH BKL BKC BKM BKS SP3 coupling, bellows coupling for servo motor, backlash-free coupling, torsionally rigid coupling, stainless steel bellow coupling, flexible shaft coupling, encoder coupling, servo drive coupling, precision coupling for CNC, R+W BK coupling India, R+W bellow coupling distributor, industrial bellow coupling, R+W SP3 torque limiter coupling, R+W shaft couplings supplier India, Jobwurx Industrial Ventures Pvt Ltd, R+W bellow coupling sizes, high precision motion coupling, backlash free flexible coupling, CNC coupling India.