Orbray BMS Brushless Motor Series BMN07-12XX with Planetary Gear

General Overview

This document provides technical specifications and ordering information for the Orbray BMN07-12XX series brushless motors combined with planetary gearheads (SPG07 series). The motors are designed for precision applications requiring compact size and variable gear ratios.

Gearhead Specifications

• Gear Ratios Available: 4.71:1, 22.22:1, 104.77:1, 493.93:1
• Number of Stages: 1 to 4 stages depending on gear ratio
• Efficiency: Decreases with higher gear ratios: 85% (1 stage) down to 52% (4 stages)
• Direction of Rotation: Consistent across all gear ratios

Dimensions

• Motor + Gear Length (L2): Ranges from 19.4 mm (lowest gear ratio) to 26.1 mm (highest gear ratio)
• Motor + Gear + Encoder Length: 25.9 mm to 32.6 mm depending on gear ratio
• Motor + Encoder Length: 18.5 mm

Performance Parameters

• Maximum Allowable Torque (Continuous): 10 mNm
• Maximum Allowable Torque (Intermittent): 20 mNm
• Rated Voltages: 3V for BMN07-1207P series, 5V for BMN07-1218P series
• No Load Speed: Varies by gear ratio and voltage, e.g., 3770 rpm (4.71:1 at 3V) down to 34 rpm (493.93:1 at 3V)
• No Load Current: Approximately 112 mA to 205 mA depending on model and gear ratio
• Stall Torque: Ranges from 1.0 mNm to 61 mNm depending on gear ratio
• Stall Current: 276 mA to 433 mA depending on model

Ordering Information

• Model numbers combine motor and gearhead specifications, e.g., BMN07-1207P4.7 indicates BMN07-1207 motor with SPG07 gearhead at 4.7:1 ratio.
• Ordering codes are provided for different gear ratios and rated voltages.

Additional Notes

• Specifications are subject to change without notice.
• Contact details for Orbray Co., Ltd. are provided for sales and technical inquiries.

Summary

The Orbray BMN07-12XX series brushless motors with planetary gearheads offer a range of gear ratios and compact dimensions suitable for precision applications. Key parameters such as torque, speed, and current are specified for each configuration, enabling selection based on application requirements. The inclusion of an encoder option allows for enhanced control and feedback.