Digital guide

You are here:
  1. Home
  2. Kollmorgen
  3. Kollmorgen B-604-BA-91-TR

Kollmorgen B-604-BA-91-TR

Model Breakdown:

  • B = B-Series Servo Motor
  • 604 = Frame Size (60 mm × 60 mm or equivalent metric frame)
  • BA = Winding Code (High-Torque Winding)
  • 91 = Stack Length Code (Long Stack)
  • TR = Shaft Configuration (Threaded shaft with keyway)
WhatApp
WeChat

Detailed content

Product Introduction:
The B-604-BA-91-TR is a brushless AC servo motor from Kollmorgen’s B-Series line, featuring a 60 mm frame size with a high-torque (BA) winding and long stack (91) for maximum torque output. The “TR” shaft configuration indicates a threaded shaft with keyway for direct coupling to leadscrews, pulleys, or gearboxes without additional coupling hardware. This motor is designed for high-performance motion control in industrial automation, robotics, and precision machinery.

Technical Specifications:

Parameter Value
Frame Size 60 mm (B-604)
Stack Length 91 (Long)
Winding Code BA (High Torque)
Shaft Type TR (Threaded + Keyway)
Rated Voltage 48 VDC (Bus)
Continuous Torque 3.5 Nm (Nominal)
Peak Torque 10.5 Nm (3× continuous)
Max Speed 4,500 RPM
Torque Constant (Kt) ~0.33 Nm/A
Back-EMF Constant (Ke) ~3.1 V/krpm
Phase Resistance ~0.6 Ω
Phase Inductance ~0.5 mH
Rotor Inertia ~18 g·cm²
Weight ~1.8 kg
Insulation Class Class H (180°C)
IP Rating IP65 (with connector)
Operating Temperature -20°C to +85°C
Feedback Resolver (Standard) or Encoder (Optional)

Functional Features:

  • High-torque BA winding optimized for maximum continuous torque at low speed
  • Long stack (91) provides increased torque over standard-length variants
  • Threaded shaft with keyway (TR) allows direct mounting of pulleys, timing belts, or leadscrew nuts
  • Integrated resolver for absolute position feedback (standard)
  • Skewed slot design for cogging-free smooth motion

Structural Features:

  • Stator: 48-slot laminated silicon steel, epoxy-potted for thermal conductivity
  • Rotor: NdFeB (Neodymium Iron Boron) permanent magnets, V-shaped magnet arrangement
  • Housing: 6061-T6 Anodized Aluminum Alloy
  • Shaft: Hardened 416 Stainless Steel, 14 mm diameter, M6×1.0 thread
  • Connector: MIL-DTL-5015 14-pin circular connector

Advantages:

  • High continuous torque (3.5 Nm) in a compact 60 mm frame
  • Threaded shaft eliminates coupling — reduces BOM and assembly time
  • Wide speed-torque envelope for diverse application profiles
  • IP65 rating suitable for harsh industrial environments

Applicable Industries:

  • CNC machine axes (X, Y, Z)
  • Pick-and-place robots
  • Conveyor drives
  • Textile machinery
  • Printing presses

Installation Requirements:

  • Mount using front flange (4-bolt) or rear flange (4-bolt) pattern
  • Torque flange bolts to 4.0 Nm
  • For TR shaft: engage threaded coupling directly — do not use additional keyway coupler unless specified
  • Ensure <0.03 mm radial runout on shaft at coupling interface

Usage Notes:

  • Do not apply axial loads exceeding 50 N on the shaft
  • Use Loctite 243 on threaded shaft fasteners to prevent loosening under vibration
  • Verify resolver excitation voltage from drive matches motor specification (typically 7.07 VAC)

You may also like