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Hydraulic Wrench
0102030405
NJS/WJB Electric high-power torque wrench
Hydraulic nut main dimensions
-Widely applicable for the installation, disassembly, and maintenance of important bolt connections in mechanical equipment and facilities in industries such as metallurgy, power, chemical, machinery, and communication, it can conveniently and quickly complete your bolt installation and disassembly tasks, while effectively ensuring the torque value you need.
-Torque repetition accuracy up to ± 3%.
-Double acting, high-speed, large turning angle.
-Achieve maximum torque output with the smallest and most compact size; The oil pipe joint is equipped with an oil pressure overload protection valve, providing safer operation.
-A power head can be used in conjunction with multiple plug-in work heads, breaking through various space limitations.
Technical parameters
| New type/model | Maximum pressure of oil cylinder |
Cylinder diameter |
Maximum working torque | Hydraulic cylinder stroke sleeve angle | Wrench suitable thread range (coarse thread) | Old type/model |
|
MPa |
mm |
Nm |
Degree |
|||
| YAX-NJS-I |
63 |
40 |
9954 |
36 |
M20-M30 |
YAX-WJB-I |
| YAX-NJS-II |
63 |
45 |
12600 |
36 |
M30-M48 |
YAX-WJB-II |
| YAX-NJS-II |
63 |
45 |
14868 |
34 |
M48-M56 |
YAX-WJB-III |
| YAX-NJS-IV |
63 |
65 |
41391 |
34 |
M64-M80 |
YAX-WJB-IV |
| YAX-NJS-V |
63 |
65 |
41391 |
39 |
M90-M100 |
YAX-WJB-V |
Selection of hydraulic torque wrench
1.Confirmation of the torque
-Referring to the drawing requirement for the bolt torque (if you are not sure about the bolt torque, please refer to the bolt and nut recommended tightening torque form according to the dimension of the bolt and nut, strength degree and material).
-The bolt and nut recommended tightening torque form.
| Strength grade |
4.8 |
6.8 |
8.8 |
10.9 |
12.9 |
||||||
| Min. |
392Mpa |
588Mpa |
784Mpa |
941Mpa |
1176Mpa |
||||||
| Material |
Steel for general construction Q235(SS41) |
Steel for mechanical construction 35(S35C) |
Chrome molybdenum steel 35CrMo |
Nickel chromium molybdenum alloy steel 42CrMo |
Nickel chromium molybdenum alloy steel 40GrNiMoA |
||||||
|
Bolt(mm) |
Dia.(mm) |
KGM |
N.m |
KGM |
N.m |
KGM |
N.m |
KGM |
N.m |
KGM |
N.m |
|
14 |
22 |
7 |
69 |
10 |
98 |
14 |
137 |
17 |
165 |
23 |
225 |
|
16 |
24 |
10 |
98 |
14 |
137 |
21 |
206 |
27 |
247 |
36 |
363 |
|
18 |
27 |
14 |
137 |
21 |
206 |
29 |
284 |
35 |
341 |
49 |
480 |
|
20 |
30 |
18 |
176 |
28 |
296 |
41 |
402 |
58 |
569 |
69 |
680 |
|
22 |
32 |
23 |
225 |
34 |
333 |
55 |
539 |
78 |
765 |
93 |
911 |
|
24 |
36 |
32 |
314 |
48 |
470 |
70 |
686 |
100 |
981 |
120 |
1176 |
|
27 |
41 |
45 |
441 |
65 |
637 |
105 |
1029 |
150 |
1472 |
180 |
1764 |
|
30 |
46 |
60 |
588 |
90 |
882 |
125 |
1225 |
200 |
1962 |
240 |
2352 |
|
33 |
50 |
75 |
735 |
115 |
1127 |
150 |
1470 |
210 |
2060 |
250 |
2450 |
|
36 |
55 |
100 |
980 |
150 |
1470 |
180 |
1764 |
250 |
2453 |
300 |
2940 |
|
39 |
60 |
120 |
1176 |
180 |
1764 |
220 |
2156 |
300 |
2943 |
370 |
3626 |
|
42 |
65 |
155 |
1519 |
240 |
2352 |
280 |
2744 |
390 |
3826 |
470 |
4606 |
|
45 |
70 |
180 |
1764 |
280 |
2744 |
320 |
3136 |
450 |
4415 |
550 |
5390 |
|
48 |
75 |
230 |
2254 |
350 |
3430 |
400 |
3920 |
570 |
5592 |
680 |
6664 |
|
52 |
80 |
280 |
2744 |
420 |
4116 |
480 |
4704 |
670 |
6573 |
850 |
8330 |
|
56 |
85 |
360 |
3528 |
530 |
5149 |
610 |
5978 |
860 |
8437 |
1050 |
10290 |
|
60 |
90 |
410 |
4018 |
610 |
5978 |
790 |
7742 |
110 |
10791 |
1350 |
13230 |
|
64 |
95 |
510 |
4998 |
760 |
7448 |
900 |
8820 |
||||
|
68 |
100 |
580 |
5684 |
870 |
8526 |
1100 |
10780 |
||||
|
72 |
105 |
660 |
6468 |
100 |
9800 |
1290 |
12642 |
||||
|
76 |
110 |
750 |
7350 |
1100 |
10780 |
1500 |
14701 |
||||
|
80 |
115 |
830 |
8143 |
1250 |
12250 |
1850 |
18130 |
||||
|
85 |
120 |
900 |
8820 |
1400 |
13720 |
2250 |
22050 |
||||
|
90 |
130 |
1080 |
10584 |
1650 |
16170 |
2500 |
24500 |
||||
|
100 |
145 |
1400 |
13720 |
2050 |
20090 |
||||||
|
110 |
155 |
1670 |
16366 |
2550 |
24990 |
||||||
|
120 |
175 |
2030 |
19894 |
3050 |
29890 |
||||||
Note:
-This is Germany standard (DlN) above, the figure in the form is the max torque of the bolt, and the recommended torque is 80% of chart figure.
-The recommended tightening torque equals the figure in the formx (70-80%) For instance: M52, strength grade is 8.8 the torque is 4704x80%=3763.2N.m.3763.2X(1.5~2)=5664.8-7526.4N.mIt is recommended that loosening torque equals about 150%of tightening torque is 4233.6N.m,so the loosening torque is3763.2X(1.5-2)=5664.8-7526.4N.m.
The Space
- -Because of the space restriction, please notice the location. For example:
- *In the situation above, the square drive hydraulic torque wrench is improper, but we can use the ultra-thin cassette hydraulic wrench whose unique feature is that it is assembly of two parts: cassette unit and power unit. in the range of the same model, we can change different power heads to tighten or loose the bolts with the same cassette unit., in addition, we can also fit the reducer inserts to change the hexagon dimensions to tighten and loose different bolts. The choosing of the ultra-thin cassette hydraulic wrench is principally the same as the square drive hydraulic torque wrench.
Technical parameters
| International units | Conversion coefficient | Non international units | Conversion coefficient | International units | |
|
Length |
|||||
| Millimeter (mm) |
10mm |
X0.03937 |
= Inch |
X25.4 |
mm |
| Centimeter(cm) |
X0.33937 |
= Inch |
X2.54 |
cm |
|
| Meter(m) |
X1.09 |
= Size |
X0.914 |
m |
|
| Meter(m) |
X1.09 |
= Size |
X0.914 |
m |
|
| Kilometer(km) |
1000m |
X0.62 |
= In |
X1.61 |
Km |
| International units | Conversion coefficient | Non international units | Conversion coefficient | International units | |
| Square millimeters (mm) |
X0.00155 |
=Square inches |
X645 |
=Square millimeters |
|
| Square millimeters (mm) |
X0.155 |
=Square inches |
X6.45 |
=Square centimeters |
|
| Square meters (m) |
X10.8 |
=Square feet |
X0.0929 |
=Square meters |
|
| Square meters (m) |
X1.2 |
=Square size/code |
X0.836 |
=Square meters |
|
| Hectares(ha) |
10000m |
X2.47 |
=Square |
X0.405 |
=Square kilometers |
| Square kilometers (km) |
X0.39 |
= Square miles |
X2.59 |
=Hectares |
|
Volume
| International units | Conversion coefficient | Non international units | Conversion coefficient | International units | |
| Cubic centimeters (cm) |
X0.061 |
=Cubic inches |
X16.4 |
=Cubic centimeter |
|
| Liter (L) |
X61 |
=Cubic inches |
X0.016 |
= 1liter |
|
| Milliliters(ml) |
100ml |
X0.034 |
=Fluid |
X29.6 |
=Milliliters |
| Liter (L) |
X1.06 |
=Quart |
X0.946 |
= 1liter |
|
| Liter (L) |
X0.26 |
=Gallons |
X3.79 |
= 1liter |
|
| Cubic meter (m) |
X1.3 |
=Cubic code |
X0.76 |
= Cubic meter |
|
Mass
| International units | Conversion coefficient | Non international units | Conversion coefficient | International units | |
| Gram (g) |
=Short ton |
X28.36 |
=Grams |
||
| Kilogram (kg) |
1000g |
X0.035 |
=Pounds |
X0.454 |
=Kilograms |
| Metric ton (t) |
1000g |
X2.2 |
=Net ton |
X0.907 |
=Tons |
| Newton (N) |
X0.225 |
X1.1 |
=Pounds |
X4.45 |
=Newton |
| Thousand newton (KN) |
X225 |
=Pounds |
X0.00445 |
=Kilonewton |
|
Torque
| International units | Conversion coefficient | Non international units | Conversion coefficient | International units |
| Newton meters (N.m) |
X8.9 |
=Pounds inches |
X0.113 |
=Newton meters |
| Newton meters (N.m) |
X0.74 |
=Pounds feet |
X1.36 |
=Thousand tons meter |
Power
| International units | Conversion coefficient | Non international units | Conversion coefficient | International units |
| Kilowatt (kW) |
X1.34 |
=Horsepower |
X0.746 |
=KW |
| Watt (W) |
X0.74 |
=Inch pounds per second |
X1.36 |
=W |
Temperature
| International units | Conversion coefficient | Non international units | Conversion coefficient | International units |
| 0C=(F-32)*1.8 |
F=(OCX1.8)+32 |