Manufacturer: Mitsubishi Electric
Product No.: GM-SPB
Country of origin:United States
Product Type: Geared Motors
Payment: T/T, Western Union
Weight: 36200g
Shipping port: Xiamen
Warranty: 12 months
Delivering robust mechanical speed reduction and high torque transmission, the Mitsubishi Electric GM-SPB serves as a reliable medium-capacity industrial drive solution within the GM-SP Series. Equipped with a built-in DC spring brake and a precision-engineered 1:25 gear reduction ratio, this 1.5kW three-phase motor is optimized for precise start-stop control, holding torque, and continuous duty cycles in high-demand automated systems. The integrated brake design ensures instantaneous deceleration and failsafe load holding during power-off events, protecting downstream machinery from backdriving.
| Specification Parameter | Technical Value / Rating |
|---|---|
| Manufacturer | Mitsubishi Electric |
| Model / Article Number | GM-SPB |
| Product Series | GM-SP Series |
| Rated Output Power | 1.5 kW |
| Nominal Gear Ratio | 1:25 (1/25) |
| Number of Phases | 3-Phase |
| Rated Frequency | 50 Hz |
| Brake Mechanism | DC Spring Brake (Failsafe Type) |
| Operating Temperature Limit | -15 to +40 degC (non-condensing) |
| Ambient Humidity Limit | 90% RH or less |
| Net Unit Weight | 36.2 kg |
| Shipping Weight (Calculated) | 37.0 kg |
When replacing legacy GM-S series drives, note that the physical shaft height and mounting footprint of the GM-SP series (such as the GM-SPB) are designed for backward integration but require checking the exact output shaft diameter. Standard GM-SP units (non-brake) cannot be retrofitted in the field with the brake assembly; the 'B' designation dictates a factory-assembled extended rear motor housing containing the integrated DC brake coil and friction disc assembly.
Operating the geared motor at ambient temperatures below -15 degC can cause standard lubricants to thicken excessively, leading to increased starting current and potential overload tripping. For continuous low-temperature use, cold-temperature grease is mandatory. Additionally, avoid deploying the DC spring brake for dynamic braking purposes during normal operation; use VFD deceleration ramps to stop the load, applying the mechanical brake only when the motor speed approaches zero to maximize friction plate life.
The DC brake coil on the GM-SPB is typically powered via an internal rectifier. To achieve rapid brake response during emergency stop sequences, switch the DC side of the brake circuit rather than the AC input side of the rectifier. Wiring the brake contactor interlocked with the main motor contactor is essential to ensure the motor never attempts to drive against a closed mechanical brake, which will lead to thermal meltdown of the motor windings and brake linings.
Isolate and lock out all 3-phase AC power lines and auxiliary brake power circuits before commencing mechanical mounting or wiring. Residual DC charge on capacitor-assisted brake power packs can present shock hazards; verify absolute zero voltage across all terminal blocks before touching connections.
Mount the geared motor securely on a flat, vibration-free surface using high-tensile fasteners to ensure perfect alignment of the output shaft with the driven load.
Route the mains power and brake control cables through separate conduit entries in the terminal box to isolate electromagnetic noise.
Ensure the brake rectifier is correctly wired to release the mechanical holding mechanism concurrently with motor energization.
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| Country of origin |
United States
|
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