How to determine the fault type of shaft mounted ZJY150-16-S reducer

To determine the fault type of the ZJY150-16-S shaft mounted reducer, the core is to quickly locate the fault through six dimensions: listening to noise, measuring temperature, checking vibration, observing oil leakage, turning hand feel, and measuring performance, combined with its structural characteristics of shaft mounted suspension, hollow shaft, and with a check (S).

The six dimensional fault diagnosis method is as follows:

1. Listen to noise (most intuitive)

(1) Smooth and low humming sound: normal

(2) Periodic 'click/clack' impact sound

Fault: Gear wear, pitting, broken teeth, poor meshing

Feature: Increased sound during load/speed changes

(3) Sharp 'squeaking/whistling'

Fault: Bearing oil shortage, ball/raceway peeling off, loose bearing seat

(4) Dull "clanging" abnormal noise (with S model)

Fault: Internal wedge/roller damage in the backstop, one-way braking failure

(5) Sudden increase in noise

Fault: Loose installation, misaligned coupling, slipping expansion sleeve

2. Temperature measurement (infrared/tactile)

(1) Normal: Shell at 40-60 ℃, uniformly warm

(2) Overall over 70 ℃ (hot to the touch)

Fault: Overload, insufficient/deteriorated lubrication, low oil level, poor heat dissipation

(3) Localized overheating (at the bearing end cover/input shaft)

Fault: Bearing damage, tight assembly, foreign object intrusion

(4) Abnormal heating in the check valve area

Fault: Stuck reverse brake, worn friction plate, excessive one-way braking resistance

3. Check for vibration (feel/vibrometer)

(1) The whole machine shakes violently and feels numb when touched by hand

Fault: Loose foundation/pull rod, misaligned shaft, loose hollow shaft expansion sleeve

(2) High frequency vibration of bearing position

Fault: Bearing wear, excessive clearance, damaged cage

(3) Vibration increases significantly with load

Fault: Poor gear meshing, broken teeth, bent shaft

4. Check for oil leakage (high incidence of ZJY)

(1) Oil leakage at the input/output shaft end

Fault: Oil seal aging, journal wear, installation eccentricity causing excessive radial force

(2) Oil leakage at the joint surface of the box body

Fault: Sealing gasket failure, loose bolts, box deformation

(3) Spray oil at the breathable plug

Fault: High internal pressure, high oil level, blocked vent plug