Kollmorgen AKM Brushless AC Servo Motors
The Kollmorgen AKM Servo Motor Series (featured model: AKM42H-ANCNC-00 3.4 Nm 6000 RPM) is Kollmorgen's industry-standard flagship brushless AC servo motor platform, recognized worldwide for its exceptional power density, smooth speed control, and extensive motion customization possibilities. Designed around high-coercivity Neodymium-Iron-Boron (NdFeB) permanent magnets and low-cogging stator geometry, AKM motors deliver rapid dynamic acceleration and precise position accuracy. Covering continuous stall torque ratings from 0.18 Nm up to 180 Nm across 8 frame sizes (40mm to 260mm flange dimensions), AKM motors offer seamless multi-voltage winding options (75V DC to 480V AC mains), IP65 shaft/housing protection, holding brakes, and diverse feedback interfaces including **Smart Feedback Device (SFD/SFD3)**, **HIPERFACE DSL single-cable digital feedback**, **EnDat absolute encoders**, and 2-pole resolvers. Engineered for plug-and-play alignment with **Kollmorgen AKD and AKD2G digital servo drives**, AKM motors serve as the direct replacement for legacy **Goldline B/M Series** and **Pacific Scientific PMA/PMB** servo motors in robotics, packaging machines, semiconductor tools, printing presses, and medical devices.
Technical Specifications
| Featured Model | AKM42H-ANCNC-00 (3.4 Nm Continuous Stall Torque, 6000 RPM Max Speed, 84mm Flange, Resolver, Keyed Shaft, Smooth IP65 Housing) |
|---|---|
| Brand / Manufacturer | Kollmorgen (Regal Rexnord Motion Control) |
| Product Series | AKM Series High-Performance Brushless AC Servo Motors |
| Frame Sizes Covered | AKM1 (40mm), AKM2 (58mm), AKM3 (70mm), AKM4 (84mm), AKM5 (108mm), AKM6 (138mm), AKM7 (188mm), AKM8 (260mm) |
| Continuous Stall Torque | 0.18 Nm to 180 Nm (1.6 lb-in to 1590 lb-in); Peak Torques up to 3x Continuous Rating |
| Operating Voltage Supply | Bus Voltages: 75V DC, 120V AC, 240V AC, 400V AC, & 480V AC (50/60 Hz) |
| Feedback Device Options | SFD / SFD3 Digital, HIPERFACE DSL, EnDat 2.1/2.2 Absolute, BiSS C, 2-Pole Resolver, Incremental Encoder |
| Enclosure & Thermal Class | IP65 Protection Standard (IP67 Washdown Optional); Class F/H Insulation System (130°C / 155°C Rise Rating) |
Documentation & Resources
Kollmorgen AKM Series Frame Size, Torque & Speed Matrix
Complete selection matrix for Kollmorgen AKM brushless servo motors. Review frame sizes, continuous stall torques, peak torques, max speeds, and standard model codes:
| Motor Frame Size | Flange Size (mm) | Cont. Stall Torque (Nm) | Peak Torque (Nm) | Max Speed (RPM) | Kollmorgen Model Code Example |
|---|---|---|---|---|---|
| AKM1 Series | 40 mm | 0.18 Nm - 0.41 Nm | 0.54 Nm - 1.25 Nm | 8,000 RPM | AKM11B-ANCNC-00 |
| AKM2 Series | 58 mm | 0.46 Nm - 1.16 Nm | 1.40 Nm - 3.50 Nm | 8,000 RPM | AKM22E-ANCNC-00 |
| AKM3 Series | 70 mm | 1.15 Nm - 3.25 Nm | 3.50 Nm - 10.0 Nm | 8,000 RPM | AKM33H-ANCNC-00 |
| AKM4 Series | 84 mm | 2.00 Nm - 6.50 Nm | 6.00 Nm - 20.0 Nm | 6,000 RPM | AKM42H-ANCNC-00 |
| AKM5 Series | 108 mm | 5.00 Nm - 14.4 Nm | 15.0 Nm - 44.0 Nm | 6,000 RPM | AKM52K-ANCNC-00 |
| AKM6 Series | 138 mm | 12.0 Nm - 29.5 Nm | 36.0 Nm - 90.0 Nm | 6,000 RPM | AKM63K-ANCNC-00 |
| AKM7 Series | 188 mm | 29.0 Nm - 75.0 Nm | 87.0 Nm - 225.0 Nm | 4,500 RPM | AKM73P-ANCNC-00 |
| AKM8 Series | 260 mm | 75.0 Nm - 180.0 Nm | 225.0 Nm - 500.0 Nm | 3,000 RPM | AKM82T-ANCNC-00 |
Legacy Kollmorgen & Pacific Scientific Servo Motors to AKM Series Replacement Guide
Obsolete Goldline B/M Series and Pacific Scientific PMA/PMB servo motors can be directly replaced with current Kollmorgen AKM series motors with 100% exact mechanical mounting adapters:
| Legacy Servo Motor Model (Obsolete) | Legacy Torque & Frame | Current AKM Servo Equivalent | Key Upgrades & Operational Advantages |
|---|---|---|---|
| Kollmorgen Goldline B-202 / B-204 | 1.2 Nm - 2.5 Nm (80mm) | Kollmorgen AKM33H / AKM42H Direct Upgrade | Higher torque density, reduced weight, low cogging torque, SFD3 digital feedback support. |
| Kollmorgen Goldline B-402 / M-403 | 3.5 Nm - 7.0 Nm (108mm) | Kollmorgen AKM43H / AKM52K Direct Upgrade | Compact frame dimensions, higher peak acceleration, plug-and-play AKD drive autotuning. |
| Pacific Scientific PMA33H / PMA43H | 2.8 Nm - 6.5 Nm (PMA Series) | Kollmorgen AKM33H / AKM43H Direct Upgrade | Exact flange and shaft mechanical equivalence, updated IP65 sealing, single-cable option. |
| Pacific Scientific PMB52K / PMB63K | 8.5 Nm - 15.0 Nm (PMB Series) | Kollmorgen AKM52K / AKM63K Direct Upgrade | Integrated 24V holding brake options, enhanced thermal dissipation under dynamic duty. |
Expert Technical Sourcing & Servo Motion Control Integration Notes
When replacing older Kollmorgen Goldline or Pacific Scientific servo motors on automated packaging lines, high-speed printing presses, semiconductor handlers, or CNC machine tools, switching to current AKM series motors delivers immediate motion benefits: 30% higher torque density per frame size, smoother low-speed velocity regulation, automatic parameter recognition with Kollmorgen AKD servo drives, and complete physical interchangeability via standard mounting flanges. Simply supply us with your existing motor nameplate serial number or complete model code (e.g., AKM42H-ANCNC-00 or B-202-A-11), and our technical engineering team will deliver a 100% compliant servo replacement specification and proposal.
Core Benchmark Model Standard Configurations
- AKM11B-ANCNC-00 (0.18 Nm Servo)
- AKM22E-ANCNC-00 (0.84 Nm Servo)
- AKM33H-ANCNC-00 (2.75 Nm Servo)
- AKM42H-ANCNC-00 (3.4 Nm Servo)
- AKM43H-ANCNC-00 (5.1 Nm Servo)
- AKM52K-ANCNC-00 (8.5 Nm Servo)
- AKM53K-ANCNC-00 (11.5 Nm Servo)
- AKM63K-ANCNC-00 (15.2 Nm Servo)
- AKM73P-ANCNC-00 (45.0 Nm Servo)
- AKM82T-ANCNC-00 (90.0 Nm Servo)
- Kollmorgen AKM Servo with 24V Brake
- Kollmorgen AKM Servo with Resolver
- Kollmorgen AKM SFD3 Digital Feedback
- Kollmorgen AKM HIPERFACE DSL Motor
- Kollmorgen AKM EnDat Absolute Encoder
- Kollmorgen Goldline B-202 Replacement
- Kollmorgen Goldline B-402 Replacement
- Pacific Scientific PMA33H Replacement
- Kollmorgen AKM IP65 Brushless Motor
- Kollmorgen AKD Servo Drive Matched Motor
