Product Introduction
The B&R 8JSB31.ee050ff00-0 is a stainless steel servo motor designed for hygienic applications. Its smooth 100% stainless-steel housing with surface finish below 0.8 µm, rounded corners, and seamless transitions supports efficient cleaning in food production and biomedical engineering. Developed in accordance with EHEDG hygiene standards, the motor offers IP69K protection, plug-in connectors, a robust single-cable hybrid solution, FDA-approved heat-resistant cables, a laser-engraved type plate, and B5/B14 mounting methods.
Technical Parameters
- Nominal speed: 5000 rpm; maximum speed: 8000 rpm
- Number of pole pairs: 4
- Nominal torque: 0.86 Nm; stall torque: 1 Nm; maximum torque: 4.41 Nm
- Nominal power: 450 W
- Nominal current: 1.02 A; stall current: 1.29 A; maximum current: 6.9 A
- Torque constant: 0.85 Nm/A; voltage constant: 54.5 V/1000 rpm
- Stator resistance: 21.417 Ω; stator inductance: 37.5 mH
- Electrical time constant: 1.751 ms; thermal time constant: 24 min
- Moment of inertia: 0.33 kg·cm²; mass without brake: 4.1 kg
- Holding torque of brake: 2.5 Nm; brake mass: 0.7 kg; brake inertia: 0.012 kg·cm²
- Cable cross-section: 2.5 mm²; connector size/type: 1.0
Parameter Analysis
The 8JSB31.ee050ff00-0 delivers a nominal torque of 0.86 Nm and a maximum torque of 4.41 Nm, with a nominal speed of 5000 rpm and a maximum speed of 8000 rpm. The torque constant of 0.85 Nm/A and voltage constant of 54.5 V/1000 rpm define the motor’s electromechanical behavior. A thermal time constant of 24 minutes and electrical time constant of 1.751 ms support dynamic operation, while the optional holding brake provides 2.5 Nm holding torque for vertical-axis applications.
Application Scenarios
This servo motor is intended for food production and biomedical engineering, where hygienic design and efficient cleaning are critical. Its IP69K protection and stainless-steel construction also make it suitable for hygienic rotating machinery applications, including pumps, compressors, and other clean-process equipment. In rotating machinery contexts such as turbines, compressors, and pumps, the 8JSB31.ee050ff00-0 can be considered where washdown resistance and smooth surfaces are required.
Installation Guide
Mounting is available in IM B5 (horizontal) or IM B14 / IMV18 configurations. Permissible radial and axial shaft forces are speed-dependent and provided as diagrams in the Technical data chapter. Axial forces are not permitted on motors with a holding brake or EnDat encoder. Cleaning must respect the IP69K limits for jet pressure, temperature, angle, and distance, and should only be performed with power removed by qualified personnel. Wire brushes and scrapers are not permitted.
Compatibility
The recommended servo drive is the ACOPOS 0014. Feedback is provided by an inductive EnDat 2.2 encoder, single-turn or multi-turn, connected via Intercontec ‘htec’ circular connectors using a single-cable hybrid solution, size 1. The cable cross-section is 2.5 mm².
Maintenance Advice
Bearing life is 20,000 hours per DIN ISO 281. Thermal protection is provided by a KTY83-110 sensor, with maximum winding temperature limited to 140 °C in the ACOPOS drive, or 110 °C with EnDat. Cooling is IC4A0A0 self-cooled. Use FDA-compliant heat-resistant cables rated up to 150 °C with automatic pressure compensation. Follow the specified IP69K washdown limits to maintain protection.
Procurement Advice
Verify the exact model number 8JSB31.ee050ff00-0 before ordering. Confirm required certifications: UL listed (C-UR-US), EHEDG certification in preparation, and FDA-compliant external materials. For vertical axes, an additional external mechanical brake is recommended. Consult the manual for speed-dependent load diagrams and derating information. Contact TenBN for availability and ordering support.
FAQ
What is the degree of protection?
The motor has IP69K protection, suitable for washdown cleaning within the specified jet pressure, temperature, angle, and distance limits.
What feedback system does the motor use?
It uses an inductive EnDat 2.2 encoder, single-turn or multi-turn, connected through Intercontec ‘htec’ circular connectors.
What are the operating temperature limits?
Operating temperature is 0 to +40 °C, with a 5% derating per 5 K above 40 °C. Storage is -25 to +55 °C and transport is -25 to +70 °C.
Is a holding brake available?
Yes, the motor can include a brake with 2.5 Nm holding torque, 0.7 kg mass, and 0.012 kg·cm² moment of inertia.
What certifications are listed?
UL listed (C-UR-US), file PRHZ2.E360421; EHEDG certification is in preparation; external materials are FDA-compliant.
Technical Specifications
| Communication Interfaces | EnDat 2.2 (single-turn or multi-turn); Intercontec 'htec' circular connector (size 1, single-cable hybrid) |
|---|---|
| Communication Protocols | EnDat 2.2 |
| Compatible Rack | ACOPOS 0014 (recommended servo drive) |
| Operating Temperature | 0..+40 °C (derate 5% per 5 K above 40 °C) |
| Certification | UL listed (C-UR-US), file PRHZ2.E360421; EHEDG certification in preparation; FDA-compliant materials |
| Input Power | 450 W nominal; 1.02 A nominal; 6.9 A maximum |
| Mounting | IM B5 (horizontal), IM B14 / IMV18 |
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