How to choose a professional Hydraulic Torque Wrench

2018-07-13 22:43:43 100

Maintenance Manual For Choosing the right hydraulic torque wrenches tool
1. Determine the torque.

Bolting Tightening Force Recommented Chart
The belows are DIN (For you reference)                                            

Strength Grade4.86.88.810.912.9
Min breaking strength392MPa588MPa784MPa941MPa1176MPa
MaterialQ235(SS41)35(S35C)35CrMo(SCM3)42CrMo(SCM4)40GrNiMoA(SNCM)
BoltingThreadTorqueTorqueTorqueTorqueTorque
KGMN.MKGMN.MKGMN.MKGMN.MKGMN.M
M1422mm7691098141371716523225
1624109814137212062524736363
18271413721206292843534149480
20301817628296414025856969480
22322322534333555397876593911
24363231448470706861009811201176
27414544165637105102915014721801764
30466058890882125122520019622402352
3350757351151127150147021020602502450
36551009801501470180176425024533002940
396012011761801764220215630029433703626
426515515192402352280274439038264704606
457018017642802744320313645044155505390
487523022543503430400392057055926806664
528028027444204116480470467065738508330
56853603528530514961059788608437105010290
6090410401861059787907742110010791135013230
6495510499876074489008820122411998153014994
6810058056848708526110010780139213645174017053
72105660646810009800129012642158415527198019405
761107507350110010780150014700180017644225022050
801158308143125012250185018130199219547248924429
851209008820140013720225022050216021172269926459
90130108010584165016170250024500259325407324131752
100145140013720205020090280027440336132935420041160
110155167016366255024990334032732400939287501049098
120175203019894305029890406039788487347756609059682

 
NOTE:
The figure of the chart is the Max torque of the bolting, the recommended torque is 70~80% of chart figure For instance: M48, strength grade is 8.8, the torque is 3920×80%=3136N.m
 

2. Space Limitation
In some working conditions, the standard hydraulic torque wrenches can not fit the complex working environment. As a result, before we choose the right hydraulic torque wrenches/electric torque wrench, we also need to consider whether the standard size hydraulic torque wrenches/electric torque wrench can fit the special space.
The JHJX manufacturer suggest customers to fill the form before they purchase any torque wrench tools from them. It is very useful for avoid choosing the wrench torque wrench tools.
how to choosing the wrench torque wrench tools
hydraulic torque wrenches case analysis:
hydraulic torque wrenches case analysis
According to the form by customers:
JHJX find out that the JHB model hydraulic torque wrenches can not work with the flange.
As a result, JHJX decide to stretch the bolt with socket. It helps the hydraulic torque wrenches work with the flange.
Standard hydraulic torque wrenches can not work in this special condition. Any special working condition, JHJX will adjust the plan according to the customers' date. Imitate the hydraulic wrench working. Make sure JHJX provide the right hydraulic torque wrenches/electric torque wrench for our customers.
The working conditions are complex. However, with the form provided by JHJX. JHJX will help customers use our torque wrench well-off in any working condition.
 
Same as Choosing the right bolt tensioner:
Same as Choosing the right bolt tensioner
Every case, JHJX will provide the Animate Dimension according to the date provided by customers in order to guarantee the customers purchase the right JHJX tools (hydraulic torque wrencheselectric torque wrenchpneumatic Torque Wrench, bolt tensioner, cylinder).
3. hydraulic torque wrenches (Loosen-Tighten torque)
Note: JHJX remind customers: the loosen torque should be the 1.5times-2.5times as tighten torque.
For example; if the bolt tight torque is 3136Nm, then the lose torque should be be 3136*(1.5-2.5)=4704Nm-7840Nm
For any other questions about how to choose hydraulic torque wrenches, electric torque wrench or bolt tensioner, please contact JHJX hydraulic manufacturer.