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Sugawara Labs Bearing Torque Tester – High-Speed Bearing Friction Torque Measurement System

Sugawara Laboratories Inc.
Type: Torque Tester
Supplier / Manufacturer: Sugawara Laboratories Inc.

Precision bearing torque measurement system for evaluating rotational friction from 0.5 to 100,000 r/min under controlled axial load, with optional temperature testing from -40 to 100°C.

Industries & Applications:
R&DQuality ControlBearing TestingFriction MeasurementHigh-Speed TestingTorque Measurement
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High-Speed Rotational Torque Measurement for Ball Bearings

The Sugawara Bearing Torque Tester is designed to measure rotational friction torque in ball bearings over a wide speed range while applying controlled axial load to the bearing.

During measurement, the bearing inner ring is driven at controlled speed while axial force is applied. The system detects the reactive torque of the outer ring, allowing bearing friction characteristics to be evaluated under different rotational speeds, loads, and optional temperature conditions.
0.5–100,000 r/minWide rotational-speed range from very low to ultra-high speed
10 mN·mMaximum measurable bearing torque
40 NMaximum controlled axial pushing force
-40 to 100°COptional temperature-controlled bearing evaluation range
Bearing size coverage extends from an inner diameter of 2 mm to an outer diameter of 35 mm. Torque, rotational speed, axial force, and temperature can be monitored in real time and output as analog voltage signals for external recording or analysis.

0.5–100,000 r/min Measurement

Covers bearing friction behavior from very low rotational speed through ultra-high-speed operating conditions.

10 mN·m Torque Capacity

Measures small rotational torque values required for evaluating bearing friction and loss characteristics.

Controlled Axial Loading

Applies axial force up to 40 N to reproduce defined bearing loading conditions during torque measurement.

Wide Bearing Size Coverage

Supports bearings from 2 mm inner diameter up to 35 mm outer diameter.

Temperature-Controlled Testing

An optional temperature-control configuration enables bearing torque evaluation from -40 to 100°C.

Programmable Test Sequences

Rotation speed and axial-load values can be continuously controlled using sequence commands.

Real-Time Measurement

Torque and related operating parameters are displayed in real time during the bearing test.

Analog Measurement Outputs

Torque, speed, axial force, and temperature can be output simultaneously as analog voltage signals.
Bearing Friction EvaluationMeasurement of rotational torque and friction characteristics under defined speed and axial-load conditions.
High-Speed Bearing DevelopmentCharacterization of bearing friction at rotational speeds up to 100,000 r/min.
Temperature-Dependent Torque TestingEvaluation of changes in bearing rotational torque across controlled low- and high-temperature conditions.
Bearing R&DComparative evaluation of bearing designs, materials, lubrication methods, and preload conditions.
Quality EvaluationRepeatable torque measurement for comparing bearing performance and manufacturing consistency.
Maximum Torque 10 mN·m
Rotational Speed Range 0.5–100,000 r/min
Maximum Axial Pushing Force 40 N
Bearing Size Inner diameter from 2 mm; outer diameter up to 35 mm
Standard Test Environment Room temperature
Temperature Option -40 to 100°C
Analog Outputs Torque / rotational speed / axial pushing force / temperature
Analog Output Channels 4 channels, DC voltage output
Output Impedance 600 Ω
External Interface RS-232 compatible
Control Serial command reception supported
Air Supply Dry air, 0.3–0.7 MPa
Air Consumption 100 L/min
Power Supply 100 VAC ±10%, 50/60 Hz
Dimensions 250 × 420 × 520 mm (W × H × D)
Weight 42 kg

Measurement Principle

The Bearing Torque Tester measures the reactive rotational torque generated at the bearing outer ring while the inner ring is driven under controlled axial load.

This measurement method enables bearing friction to be evaluated as a function of rotational speed, preload, and temperature. Sequence control allows speed and load conditions to be varied continuously during automated measurement.
 

Related Low-Torque Measurement Option

The ATP-1MN Pusher-Type Torque Sensor can be mounted on a compatible Sugawara Anderon Meter drive unit to measure small reactive torque in completed bearings under axial preload.