8WSB gear motors

Compact servo motors allow precise positioning

The 8WS motor series makes it possible to implement servo applications that require highly precise synchronization and accurate positioning in limited space. Potential applications include gluing and dosing systems, grippers, measurement and testing equipment, filling systems and robot axes.

8WSB1 (size 1; IP54 and IP66/67; direct mounted gearbox)

8WSB2 (size 2; IP54 and IP66/67; direct mounted gearbox)

8WSB3 (size 3; IP54 and IP66/67; direct mounted gearbox)

8WSB4 (size 4; IP54, IP66/67 and IP69K; direct mounted gearbox)

Accessories

Documentation

8WS user's manual

8WSB gear motors

8WSB gear motors are 8WSA servo motors with a directly mounted 1- to 3-stage planetary gearbox. The seamlessly welded housing allows for a compact design of the motor-gearbox unit and opens up additional application possibilities.

These brushless motors are offered in four different diameters ranging from 17 to 40 millimeters. The robust, compact 8WS-series motors are specially designed for harsh industrial environments and are available in all sizes with IP54 or IP66/67 protection. Size 4 (ø 40 mm) is optionally available in hygienic design with IP69K protection.

The motors are designed for 60 VDC and cover a power range from 7 to 205 watts of continuous power. The integrated absolute encoder has a resolution of 4096 positions per revolution. The double-shielded hybrid motor cable – available in 2 lengths – is connected directly to the motor and can be used in cable drag chains.

Features

Ultra compact and highly dynamic
Power range from 7 to 205 watts for 60 VDC DC bus voltage
Can be used with the B&R ACOPOSmicro drive system
Robust industrial connectors with optimal EMC shielding
Size 4 (ø 40 mm) optionally available in hygienic design with IP69K protection
Pre-assembled hybrid motor cable permanently connected to the motor

Additional information

8WSB gear motors
8WSB - General motor data
8WSB - Order key

Downloads

8WS user's manual
EU Declaration 8WS
UK Declaration 8WS
UL Certificate of Compliance 8WS Only valid for: 8WSB32.xxxxxS2xxxx and 8WSB43.xxxxxS3xxxx

Online tools

CAD configurator For motors and gearboxes. Our CAD application allows you to access 2D/3D CAD data in many different formats.

Motor data

Motors	Nominal speed n_N [rpm]	Stall torque M₀ [Nm]	Flange dimensions [mm]	Centeringdiameter [mm]	Shaft diameter [mm]
8WSB11...	5760 - 6000 The nominal motor speed is limited by the max. gearbox input speed. The following values are also affected by this: Nominal torque M_n, nominal current I_N, stall torque M₀, stall current I₀, maximum torque M_max, maximum current I_max, maximum speed n_max	0.006 - 0.008	17	10 h8	3 h6
8WSB21...	5760 - 6000 The nominal motor speed is limited by the max. gearbox input speed. The following values are also affected by this: Nominal torque M_n, nominal current I_N, stall torque M₀, stall current I₀, maximum torque M_max, maximum current I_max, maximum speed n_max	0.019 - 0.027	22	12 h8	4 h6
8WSB32...	4800 - 5000 The nominal motor speed is limited by the max. gearbox input speed. The following values are also affected by this: Nominal torque M_n, nominal current I_N, stall torque M₀, stall current I₀, maximum torque M_max, maximum current I_max, maximum speed n_max	0.094 - 0.100	32	20 h8	6 h6
8WSB43... IP54/66/67	4000 - 5000 The nominal motor speed is limited by the max. gearbox input speed. The following values are also affected by this: Nominal torque M_n, nominal current I_N, stall torque M₀, stall current I₀, maximum torque M_max, maximum current I_max, maximum speed n_max	0.175 - 0.275	40	25 h8	8 h6
8WSB43... IP69K		0.175 - 0.275	40	26 h7	10 j7