Overview

This document provides detailed technical specifications, performance data, and dimensional information for the AB series of mechanical transmission equipment produced by Limtec (Beijing) Transmission Equipment Co., Ltd. It covers nominal and maximum torque, speed ratings, backlash precision, torsional rigidity, forces, efficiency, weight, operating conditions, and dimensional standards for various model sizes and gear ratios.

1. Specifications and Performance Parameters

• Nominal Output Torque (T2N): Ranges from 3 Nm to 2,000 Nm depending on model and gear ratio stage.
• Maximum Output Torque (T2B): Up to three times the nominal torque for short durations.
• Nominal Input Speed (n1N): Varies by model, from 5,000 rpm for smaller models (AB042, AB060) down to 2,000 rpm for the largest (AB220).
• Maximum Input Speed (n1B): Up to 10,000 rpm for smaller models, decreasing to 4,000 rpm for the largest.
• Backlash Options: Three precision classes are defined:
  • Micro Backlash (P0): ≤1 arcmin for smaller ratios and models, ≤3 arcmin for larger ratios.
  • Precise Backlash (P1): ≤3 to 5 arcmin depending on ratio.
  • Standard Backlash (P2): ≤5 to 7 arcmin depending on ratio.
• Torsional Rigidity: Ranges from 3 Nm/arcmin for smallest models to 225 Nm/arcmin for largest, indicating resistance to twisting under load.
• Maximum Radial and Axial Forces: Radial forces up to 50,000 N and axial forces up to 35,000 N depending on model.
• Service Life: Rated for 20,000 hours under continuous operation.
• Efficiency: ≥97% for gear ratios 3-10, ≥94% for ratios 15-100.
• Weight: From 0.5 kg for smallest single-stage units to 60 kg for largest double-stage units.
• Operating Temperature: -40°C to +90°C.
• Lubrication: Low temperature grease recommended.
• Protection Grade: IP65, suitable for dust and water ingress protection.
• Mounting Position: All directions supported.
• Noise Level: Ranges from ≤56 dB to ≤70 dB at 3000 rpm input speed.

2. Moment of Inertia

Moment of inertia values are provided for each model and gear ratio stage, ranging from 0.03 kg·cm² for smallest units to approximately 70 kg·cm² for larger units, affecting dynamic response and acceleration characteristics.

3. Dimensional Data

Dimensions are specified for single-stage (ratio 3-10) and double-stage (ratio 15-100) units across models AB042 to AB220. Key dimensions include shaft diameters, mounting hole sizes, lengths, and flange sizes. Metric sizes for motor connection boards are standardized, with optional sizes for certain models.

• Shaft Types: Two shaft types (S1 and S2) are detailed with corresponding dimensions.
• Mounting and Connection: Thread sizes and pitch for mounting bolts and shaft connections are specified.

4. Notes and Recommendations

• Maximum acceleration torque and forces are specified at an output speed of 100 rpm, acting at the center of the output shaft.
• Half service life is based on continuous operation conditions.
• Lubrication with low temperature grease is recommended to maintain performance across the specified temperature range.
• Protection grade IP65 ensures suitability for industrial environments with dust and water exposure.

Critical Information Summary

• Ensure selection of appropriate backlash precision class based on application requirements.
• Verify maximum input speed and torque limits to avoid premature wear or failure.
• Consider torsional rigidity and moment of inertia for dynamic and control system design.
• Use specified lubrication and observe operating temperature limits for reliability.
• Refer to dimensional tables for correct mounting and integration with motors and machinery.

For detailed selection and sizing, consult the "Reducer Selection" tool referenced in the document.