Orbray Precision Gearhead Series SPG12 - Technical Summary

General Specifications

• Housing Material: Metal
• Geartrain Material: Steel
• Maximum Recommended Input Speed: 8000 rpm
• Operating Temperature Range: -10 to +60 °C
• Backlash at No-Load per Stage: Specified but exact value not provided
• Output Shaft Bearings: Sintered sleeve bearings
• Maximum Shaft Radial Load: 4 N (measured 7 mm from flange)
• Maximum Shaft Axial Load: 2 N
• Maximum Shaft Press Fit Force: 30 N
• Shaft Radial Play: 0.03 mm
• Shaft Axial Play: 0.03 mm
• Maximum Allowable Torque (Continuous): 100 mNm
• Maximum Allowable Torque (Intermittent): 200 mNm

Gear Ratio and Performance Parameters

Combination with Motors

The gearheads can be combined with various motor types, including CMS and BMS series motors. The total length of the motor plus gearhead varies depending on the reduction ratio and motor model:

• CMS12-15..P: 29.2 mm to 40.7 mm depending on ratio
• CMS12-20..P: 33.4 mm to 44.9 mm
• CMS12-30..P: 44.2 mm to 55.7 mm
• BMS12-15..P (Brushless): 29.2 mm to 40.7 mm
• BMS12-21..P (Brushless): 35.2 mm to 46.7 mm

Example: CMS12-1506 motor combined with SPG12 gearhead at 3.5 reduction ratio is designated CMS12-1506P3.5.

Additional Notes

• Dimensions marked with ※ are measured with the shaft pushed against the gearhead.
• Specifications are subject to change without notice.
• For non-standard gear ratios not listed, refer to the table on page 105 of the original document.

Manufacturer Information

Orbray Co., Ltd.
3-8-22 Shinden, Adachi-ku, Tokyo 123-8511 Japan
Tel: +81-3-5390-7620
Website: https://orbray.com/en/
Email: [email protected]