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Precautions for high-power hydraulic torque wrenches.Air hammer drills Vendor
source:Industry News release time:2021-11-16 Article author:Rosit Popular:Air band saw
1. The connecting hose should be in a free state and must not be coiled into a circle with a diameter less than 500mm;
2. Grease should be applied to the connecting pins and movable parts of the hydraulic wrench to reduce the torque loss due to friction;
3. The hydraulic system should not be touched by hand when working;
4. After removing the quick connector, the exposed part of the connector must be covered with a plastic cover;
5. The working oil is ordinary hydraulic oil, and its brand is YA-N32G or YA-N45G (equivalent to 20# engine oil).
The working oil in the system must be replaced and cleaned every year.
Hydraulic torque wrench application:
1. Select the required wrench type according to the size range of the threaded connection, and do not use small wrenches to tighten large-size bolts;
2. The oil cylinder pressure shall not exceed the maximum oil pressure of 63MPa to avoid damage to the hydraulic system;
3. Counting pressure = pre-tightening torque / unit torque
Table 2 Hydraulic Torque Wrench Cylinder Pressure and Corresponding Torque, Pressure and Torque Calculation Formula Generate Torque NJS- Ⅰ Known Pressure NJS- Ⅱ Known Pressure NJS- Ⅲ Known Pressure NJS- Ⅳ (Ⅴ) Nm When torque is sought, torque is required When trying to find the torque, use the known pressure to find the torque. M1=158P Known M2=200P Known M3=236P When the torque is known, use the torque to find the pressure. When the torque finds the pressure, when the torque finds the pressure, M4=657P. For M1/158, use P=M2/200, use P=M3/236, and use P=M4/657 1 158 200 236 657 2 3 4 5 6 7 8 9 10 20 30 40 50 60 63max 316 474 632 790 948 1106 1264 1422 1580 3160 4740 6320 7900 9480 9954max 400 600 800 1000 1200 1400 1600 1800 2000 4000 6000 8000 10000 12000 12600max 472 708 944 1180 1416 1652 1888 2124 2360 4720 7080 9440 11800 14160 14868max 1314 1971 2628 3285 3942 4599 5256 5913 6570 13140 19710 26280 32850 39420 41391max
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