Digital guide

You are here:

KOLLMORGEN B-604-B-91-B3R

Product Name: B-Series Brushless DC Servo Motor with Holding Brake

Model Series: B-600 Series (B-Frame Servo Motor)

Product Type: Permanent Magnet Brushless DC Servo Motor with Integrated Electromagnetic Holding Brake

Model Number: B-604-B-91-B3R

Detailed content

Frame Size: 60 mm (NEMA 23 Equivalent)

Rated Continuous Torque: 3.8 Nm (33.6 lb-in)

Peak Torque: 11.4 Nm (100.9 lb-in)

Rated Speed: 3,000 RPM

Maximum Speed: 4,500 RPM

Rated Voltage: 480 VAC (Three-Phase)

Continuous Current: 9.1 A RMS

Peak Current: 27.3 A

Power Rating (Continuous): 1.2 kW (1.6 HP)

Power Rating (Peak): 3.6 kW (4.8 HP)

Holding Brake: Integrated Electromagnetic Holding Brake, 24 VDC Activation, 2.5 Nm Holding Torque

Encoder Type: Multi-Turn Absolute Encoder, 17-Bit Resolution (131,072 Counts/Rev), BiSS-C / EnDat 2.2 Protocol

Protection Rating: IP65 (Dust-tight and protected against water jets from any direction)

Cooling Method: Forced Air Cooling (Internal Fan)

Shaft Type: Keyed Shaft with Shaft Seal, Diameter 14 mm

Weight: Approximately 3.8 kg (8.4 lb)

Housing Material: Anodized Aluminum Alloy 6061-T6

Magnets: High-Energy Neodymium Iron Boron (NdFeB), Grade N42SH

Winding Insulation Class: Class H (180°C)

Bearing Type: Dual Angular Contact Ball Bearings, Sealed, Lubricated for Life

Electrical Connector: M23 12-Pin Connector (Power + Encoder + Brake)

Ambient Operating Temperature: 0°C to +40°C (Continuous), -20°C to +80°C (Short-Term)

Storage Temperature: -40°C to +85°C

Compliance Standards: CE, UL, RoHS, REACH, WEEE

Applicable Industries: CNC Machining, Robotics, Packaging Machinery, Printing Presses, Material Handling, Semiconductor Equipment

Key Features:

  • High torque-to-inertia ratio for rapid acceleration/deceleration
  • Integrated absolute encoder eliminates homing sequence at power-up
  • Holding brake ensures load retention during power-off
  • Sealed construction for harsh industrial environments
  • BiSS-C / EnDat 2.2 dual-protocol encoder for flexibility

Installation Requirements:

  • Mount using B-face flange with 4 mounting holes (M6 tapped)
  • Alignment tolerance: ±0.05 mm radial, ±0.05 mm axial
  • Cable bend radius minimum: 5× cable diameter
  • Ground connection mandatory to motor housing

You may also like