Description
The Bosch Rexroth MSK050C-0600-NN-S1-UG1-NNNN is a high-performance synchronous AC servo motor within the IndraDyn S product family. It is engineered to provide precise speed and position control for dynamic automation applications, including CNC machine tools, packaging machinery, printing presses, and robotics handling systems. It operates in combination with Rexroth IndraDrive controller platforms (such as the HCS or HMU series).
Commercial Supply Status
- Condition: New Original, Factory Sealed
- Availability: In stock
- Lead Time: 1–3 business days
- Warranty: 12 months
- Pricing Note: Price subject to market conditions; contact us for a firm quote.
Field Engineering & Integration Notes
In machine design and maintenance deployments, the MSK050C frame is highly favored for its compact envelope relative to its torque capability. The absolute optical encoder feedback system inside this variant requires a stable thermal environment; ensure the motor’s rear housing is protected from heavy mechanical shock or direct exposure to high-pressure washing fluids.
During 2 AM troubleshooting of positioning loop errors or drive axis faults (such as a “Feedback Error” on the IndraDrive panel), inspect the physical speed/feedback connector cable assembly. Ensure that the blind-mate plug is fully seated and that the cable bending radius conforms to dynamic routing standards. If you are replacing an older or differing encoder variant (e.g., an M1 configuration), verify that the axis parameters and encoder resolution factors are fully re-loaded and updated within the IndraWorks engineering software environment before applying power to the high-voltage DC bus.
Hardware Model Code Breakdown
- MSK: Product Series (IndraDyn S Synchronous Servo Motor)
- 050: Frame Size (Motor size 050, referencing stator cross-section dimensions)
- C: Stator Length (C indicates a medium-length core stack for specific torque sizing)
- 0600: Winding Code (Specifies the nominal maximum speed performance threshold, typically up to 6,000 rpm)
- NN: Cooling Mode (Natural convection cooling layout without additional fan or liquid ports)
- S1: Feedback/Encoder Type (Single-turn absolute optical encoder system providing high-resolution position mapping per revolution)
- UG1: Shaft Configuration (Plain, smooth shaft variant with standard integrated radial shaft seal ring; includes universal plug connection geometry)
- NNNN: Special Options (Standard factory configuration block with no specialized brake modifications or mechanical variants)
Technical Specifications
| Parameter | Value |
| Motor Type | Permanent Magnet AC Synchronous Servo Motor |
| Maximum Speed (n_{max}) | 6,000 rpm |
| Continuous Torque at Stall (M_0) | 5.0 Nm (typical baseline for frame length C; verify with OEM datasheet) |
| Peak Torque (M_{max}) | 15.0 Nm (verify exact saturation envelope based on active drive matching) |
| Feedback System | Single-turn absolute optical encoder (S1 configuration) |
| Mechanical Output Shaft | Smooth/Plain configuration with shaft seal ring |
| Electrical Connector Profile | 240° rotatable plug option for power and feedback loops |
| Thermal Protection | Integrated KTY84 or PT1000 temperature sensor tracking |
| Ingress Protection Rating | IP65 rated main housing assembly |
| Operating Temperature Envelope | 0 to +40 °C (derating factors apply if ambient exceeds +40 °C) |
| Insulation Class | Thermal Class 155 (Class F) |
Frequently Asked Questions
- Q: Does the “S1” encoder specification retain its absolute zero point if the 24 V DC control power is cycled?
- A: As a single-turn absolute encoder, the system reads its exact mechanical orientation accurately inside a 360^{\circ} window immediately upon boot without running a homing routine. However, because it is not a multi-turn encoder, it does not count total revolutions across power cycles. For applications requiring multi-turn position memory without axis referencing after power loss, an “M1” type encoder module must be specified.
- Q: Can this motor be utilized on a machine tool axis that requires a mechanical holding brake?
- A: The “NNNN” code extension designates that this specific model does not include an internal electromechanical holding brake. If your system features a vertical axis subject to gravity drop, you must utilize an external secondary braking mechanism or replace the unit with a variant that includes an integrated 24 V DC holding brake.
- Q: What is the maintenance schedule for the integrated radial shaft seal?
- A: In applications where the motor face interfaces directly with a oil-filled gearbox housing, check for fluid weeping behind the shaft flange during annual scheduled plant maintenance down-times. If a seal replacement is required, ensure the shaft surface is completely free of scoring or particulate damage before mounting the new seal assembly. Verify all seal limits on the OEM datasheet before commissioning.
