Description
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Product Model | 8YS-K0055R0.005-0 |
| Manufacturer | B&R Industrial Automation |
| Product Series | 8YS Servo Motor Series |
| Product Type | AC Servo Motor |
| Motor Category | Industrial Servo Motor |
| Drive DC Bus Voltage | 640 VDC |
| Current Rating | 4.04 A |
| Rated Torque | 3.77 Nm |
| Protection Rating | IP65 |
| Cooling Method | Verify against motor nameplate |
| Feedback System | Verify encoder configuration |
| Shaft Configuration | Verify mechanical drawing |
| Operating Speed | Verify original motor datasheet |
| Installation | Servo motor mounting arrangement |
| Manufacturer Status | Reported discontinued |
Technical verification note: The 640 VDC, 4.04 A, 3.77 Nm, and IP65 values are reported in multiple component records. The exact rated speed, encoder type, winding data, and mechanical dimensions require the original B&R documentation.
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Product Introduction
B&R 8YS-K0055R0.005-0 Servo Motor
The B&R 8YS-K0055R0.005-0 is an industrial servo motor from the B&R 8YS series, designed for controlled rotary motion in automated machinery. Its published identification data includes a 4.04 A current rating, 3.77 Nm torque rating, and IP65 protection. It operates as part of a servo drive system rather than functioning as an independent motor controller.
For maintenance engineers, this motor is relevant when replacing a failed axis motor in existing B&R motion-control installations. Matching torque capacity alone is insufficient. Encoder feedback, electrical characteristics, shaft dimensions, mounting geometry, and drive compatibility must also be verified.
8YS-K0055R0.005-0
Application Scenarios & Field Pitfalls (The Engineer’s Perspective)
Engineering Pain Point
A production machine can lose positioning accuracy or stop completely when a servo motor develops winding insulation problems, bearing wear, or encoder feedback faults. In packaging and material-handling equipment, even a relatively small motor failure can interrupt an entire production sequence.
The B&R 8YS-K0055R0.005-0 is intended for controlled machine motion. Its IP65 enclosure rating is relevant in installations exposed to dust and water jets, provided the motor is installed within its specified environmental limits.
Replacing the motor requires more than matching the physical dimensions. The electrical and feedback characteristics must agree with the existing servo drive.
Typical Applications
- Packaging Machinery: Servo-driven positioning axes for product handling, indexing, and synchronized machine movements.
- Material Handling: Controlled rotary motion in automated transfer and positioning mechanisms.
- Industrial Assembly: Repeatable movement of machine axes in automated assembly equipment.
- General Manufacturing: Motor replacement in legacy B&R-controlled production machinery.
Technical Pitfalls to Avoid
1. Verify the encoder and feedback configuration.
Do not assume that two 8YS motors have identical feedback arrangements. Check the encoder type, connector pinout, feedback resolution, and cable compatibility. A feedback mismatch can prevent drive enablement or cause positioning errors.
2. Confirm the motor-to-drive electrical match.
The published motor identification includes 4.04 A and a 640 VDC drive-bus specification. Verify the actual drive’s supported motor current, DC bus voltage, winding parameters, and commissioning data. Never use the DC bus figure as a substitute for the motor’s rated phase voltage.
3. Inspect the mechanical interface.
Check shaft diameter, keyway, flange dimensions, mounting orientation, and coupling alignment. Incorrect alignment increases bearing loading and can shorten motor service life.
4. Do not overlook insulation and bearing condition.
For replacement motors that have been stored for extended periods, inspect insulation resistance using the manufacturer’s approved procedure. Check shaft rotation, bearing noise, and signs of moisture ingress. Disconnect sensitive encoder electronics before performing insulation tests.
Field recommendation: Before ordering, obtain the existing motor’s complete nameplate photograph and the connected drive model. Record encoder identification and mechanical measurements. These details help prevent receiving a motor that fits the mounting position but cannot operate correctly with the installed drive.
Related Products
The following models are references within the B&R 8YS servo motor family. They represent alternative motor configurations, not confirmed direct replacements.
8YS-K0015R0.019-0
Alternative 8YS motor configuration. Its different model designation indicates a different motor specification. Review torque, speed, feedback, and mechanical interfaces before considering it for another machine axis.
8YS-K0020R0.006-0
Another 8YS servo motor reference for industrial motion applications. Suitable for evaluation when maintaining other motor configurations within the same product family.
8YS Series Servo Motors
The broader motor family provides different motor configurations for machine-axis applications. Selection requires matching electrical, feedback, and mechanical specifications.
ACOPOS Servo Drive Series
B&R servo drive family for motor speed, torque, and position control. The specific drive model must support the motor’s electrical and feedback configuration.
ACOPOSmulti Drive System
Modular servo drive architecture for multi-axis machinery. Relevant when evaluating coordinated motion applications and replacement drive hardware.
B&R Motor Feedback Cables
Connect motor feedback devices to compatible servo drives. Connector type, pin assignment, cable length, and shielding must match the installed motor and drive.
B&R Servo Motor Power Cables
Carry motor power between the servo drive and motor. Verify conductor sizing, connector arrangement, cable length, and braking requirements.
Related models and product families are references for motion-system maintenance. Specific drive-to-motor compatibility must be confirmed from B&R technical documentation.
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Procurement and Quality Control Notes
The B&R 8YS-.005-0 is reported as discontinued. Procurement should focus on exact motor identification and functional condition.
Recommended incoming inspection:
- Verify the complete model number: 8YS-.005-0.
- Photograph the motor nameplate and electrical ratings.
- Inspect shaft, flange, mounting threads, and connectors.
- Check bearing condition and shaft rotation.
- Request winding insulation test records.
- Verify encoder feedback operation.
- Confirm compatibility with the installed B&R servo drive.
- Obtain actual condition documentation.
Condition classification:
- New surplus: Unused original equipment; storage condition must be checked.
- Refurbished: Previously used equipment that has undergone inspection and repair.
- Used: Previously installed equipment without confirmed refurbishment.
Engineering takeaway: The 8YS-.005-0 is a servo motor, not a servo drive or standalone current-sensing resistor. Its replacement must match the complete motor-drive-feedback configuration, not just the published torque rating.
