Page 52 of Constant Velocity Joints for Industrial Machines by NTN Corporation Japan

usage and handling usage and handling 4 cautions for installation work 1 installation procedure 1 checking the installation dimensions check that the mounting span on the machine coincides with the length of the constant velocity joint see fig 1 fig 1 2 filling the grease fill the grease included with the constant velocity joint to 1/2 to 1/3 as much as the undercut space capacity of the mounting flange hub see fig 2 caution the grease can cause eye inflammation to human eyes when handling it wear protective goggles if it has contaminated the eyes rinse with clean water and immediately seek medical attention the grease can cause skin inflammation when handling it wear protective gloves if it has touched skin wash it off thoroughly with water and soap Ħavoid hitting the cvj with a foreign object or exerting an impact force onto the cvj Ħlimit the angle to the operating angle range at static state in order to avoid damage on the boot Ħbe careful not to damage or deform the boot and boot band Ħthe free-side cvj proper can be readily come off the shaft be careful not to allow it to be released from the shaft Ħbe sure to enclose the cvj with a safety cover if splash of oil even in a smallest amount to the surrounding is unacceptable be sure to incorporate a cover that contains oil splash Ħin the case of a fixed disc type the joint assembly can be easily mounted if the free side is mounted first if the mounting span is short and mounting of the joint assembly is difficult shift the machine as necessary install the packing to a correct position being careful not to damage or deform it while tightening the bolts be careful not to deform the metal ring on boot Ħfor a coupling type fit the o-ring to a correct position being careful not to damage it see fig 4 danger Ħdo not approach the running joint fig 4 table 1 nominal bolt size fig 2 tightening torque1 kgf m 19.6 39.2 73.5 118 181 235 353 490 588 883 1 270 to to to to to to to to to to to 24.5 49.0 83.4 127 201 275 392 539 686 981 1 370 3 installing the joint install the joint to the flange with the included bolts see fig 3 tighten the bolts with a torque equivalent to jis bolt strength category 8.8 the recommended bolt tightening torques are listed in table 1 retighten the bolts immediately after and one month after commissioning the operation with the joint m 8 m10 m12 m14 m16 m18 m20 m22 m24 m27 m30 1 data is for bolt strength classification jis 8.8 fig 3 50

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