JB/T 5558-2015Test methods for speed reducers and increasers (English PDF)

Foreword

This Standard was drafted as per the rules specified in GB/T 1.1-2009.

This Standard replaced JB/T 9050.3-1999 Load Test Method of Reduction Cylindrical Gear Units, and JB/T 5558-1991 Worm Reducer Load Test Method. This Standard was mainly based on JB/T 9050.3-1999, and integrated the contents of JB/T 5558-1991. Compared with JB/T 9050.3-1999, this Standard has the major technical changes as follows.

--- Change the standard title into Test Method for Reduction (Increase) Gear Units (see standard title).

--- Expand the scope of application of the standard, adding bevel gear reducers, planetary gear reducers, worm gear reducers, and various combined reducers and increasers (see Clause 1 of this Edition; Clause 1 of the 1999 Edition).

--- Change the description of the test piece requirements (see Clause 3 of this Edition; Clause 3 of the 1999 Edition).

--- Add the provisions for situations where sensors cannot be installed simultaneously on the high-speed and low-speed shafts of the test piece (see 4.2 of this Edition);

--- Delete the provisions regarding adjusting the instrument torque display value and the no-load torque of the test piece (see 4.3 of the 1999 Edition);

--- Add the provisions regarding the measurement accuracy of special temperature test and noise test (see Clause 5 of this Edition);

--- Change the number of stress cycles per tooth of high-speed gears at rated speed and torque in Table 1 (see 6.1 of this Edition; 6.1.1 of the 1999 Edition).

--- Change the provisions regarding product exit-factory and acceptance tests (see 6.3 of this Edition; 6.1.3 of the 1999 Edition);

--- Delete the relevant test qualification indicators (see 6.3 of the 1999 Edition).

1 Scope

This Standard specifies the test methods and data processing methods for reducers (increasers).

This Standard applies to cylindrical gear reducers (increasers), bevel gear reducers (increasers), planetary gear reducers (increasers), worm gear reducers (increasers), and various combined reducers (increasers) with high-speed shaft speeds not exceeding 3000 r/min.

2 Normative References

The following documents are essential to the application of this Document. For the dated documents, only the versions with the dates indicated are applicable to this Document; for the undated documents, only the latest version (including all the amendments) is applicable to this Document.

GB/T 3785.1 Electroacoustics - Sound level meters - Part 1: Specifications

GB/T 6404.1 Acceptance code for gear units - Part1.Test code for airborne sound

GB/T 6404.2 Acceptance code for gear units - Part 2: Determination of mechanical vibrations of gear units during acceptance testing

3 Requirements for Test Piece

4 Requirements for Test Equipment

5 Requirements for Temperature, Noise, and Vibration

Testing Instruments in the Load Test The temperature of the oil bath and bearings of the test piece shall be measured using a calibrated thermometer with a range up to 150°C. For special temperature measurements, various specialized temperature measuring instruments or methods can be used.

Noise testing during the test can be performed using various types of sound level meters, with measurement accuracy meeting Level 2 specified in GB/T 3785.1. When spectral analysis of the noise source is required, an octave band or 1/3 octave band filter-type spectrum analyzer […]