China ZQ, JZQ Cylindrical Gearbox Speed Reducer - Reliable Suppliers & Factory for Industrial Applications
Product Features
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The reducer is used for both forward and reverse operation.
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The reducer has nine types of transmission ratios, nine configuration types and three low-speed shaft types.
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The transmission ratios of this type of reducer are:
48.57
40.17
31.5
23.34
20.49
15.75
12.64
10.35
8.23
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The extended model can achieve a larger transmission ratio by adding a high-speed stage:
317.28
291.19
243.86
223.80
191.22
163.38
141.73
121.10
92.21
81.70
65.54
Conditions of Use
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The circumferential speed of the gear transmission in the reducer shall not exceed 10 meters per second.
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The rotational speed of the high-speed shaft shall not exceed 1,500 revolutions per minute.
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The working environment temperature of the reducer ranges from -40℃ to +40℃.
Maintenance
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🔍1. Regularly Check the Oil LevelCheck the oil level once a month or every 500 hours of operation to ensure it is within the specified range.
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🛢️2. Regularly Change the Lubricating Oil(1) First oil change: The first oil change should be carried out 36 hours after the first operation to remove the metal shavings produced during the running-in period.(2) Subsequent oil change: After that, depending on the working environment and load conditions, the lubricating oil can be replaced every 2,000 to 5,000 hours of operation or every 6 to 12 months. In harsh environments (such as high temperatures, much dust, and continuous heavy loads), the oil change cycle should be shortened.(3) Oil change method: When the reducer is still warm (the lubricating oil has good fluidity), drain the old oil and add new oil to the specified oil level.
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🧹3. Keep Clean & Ensure Vent Cap is UnobstructedRegularly clean the oil stains and dust on the surface of the reducer, and inspect and clean the vent cap to prevent blockage.
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🔩4. Fastening InspectionRegularly check whether all installation bolts and connecting parts are loose.
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⚠️5. Abnormal Situation Handling🚨 Once a sudden increase in noise, intensified vibration, abnormal temperature rise or severe oil leakage is detected, the machine should be stopped immediately for inspection. Operation can only resume after the fault has been eliminated.
Detail Pictures
Frequently Asked Questions (FAQ)
QWhat transmission ratios are available for the ZQ/JZQ reducer?
The standard model offers nine transmission ratios: 48.57, 40.17, 31.5, 23.34, 20.49, 15.75, 12.64, 10.35, and 8.23. The extended model with an additional high-speed stage provides even larger ratios ranging from 65.54 up to 317.28.
QCan the ZQ/JZQ reducer be used for both forward and reverse operation?
Yes. The reducer is designed to support both forward and reverse operation, making it versatile for a wide range of industrial applications.
QWhat is the maximum allowable rotational speed for the high-speed shaft?
The rotational speed of the high-speed shaft must not exceed 1,500 revolutions per minute (RPM). Exceeding this limit may cause damage to the internal components.
QWhat are the operating temperature limits for the reducer?
The reducer is designed to operate in environments ranging from -40℃ to +40℃. If used in extreme temperatures outside this range, additional protective measures should be considered.
QHow often should the lubricating oil be changed?
The first oil change should be performed 36 hours after initial operation. Subsequently, oil should be replaced every 2,000–5,000 hours of operation or every 6–12 months. In harsh working conditions (high temperature, heavy dust, or heavy continuous loads), the interval should be shortened accordingly.
QWhat should I do if the reducer shows abnormal noise or vibration during operation?
If you detect a sudden increase in noise, intensified vibration, abnormal temperature rise, or severe oil leakage, stop the machine immediately. Do not resume operation until a thorough inspection has been carried out and the fault has been fully resolved.






