Enerpac EPH-Series - Manual (Page 3)

• The maximum force exerted in tons should be 7 to 10 times the diameter of the shaft in
inches or 0.3 to 0.4 times the diameter in millimeters. (Example: A 1½” (40mm) diameter
shaft would generally require a 15 ton puller.)
• Long Jaws are available for larger capacity pullers. To change jaws, remove the ball lock
pins and slide the standard jaws out of the cage. Insert the “T” of the long jaws into the
T-slot of the cage and secure the jaws by inserting ball lock pins.
CAUTION
The rating of the puller remains the same when using the long jaws but the gripping
force is reduced by 75%. Never attempt to pry the puller by inserting anything
between the jaws. This may cause center bolt damage.
• Distortion of the jawhead assembly will occur if the bolt nut is continually forced against the
jawhead assembly. To reduce this risk, use the optional shaft protectors/ extenders that fit
over the puller’s end for tip protection and additional reach.
Note
It is impossible to predict the exact force needed for every pulling situation. The amount of press
fit and force of removal can vary greatly between jobs. The set-up requirements along with the
size, shape, and condition of the parts being pulled are variables which must be considered.
Study each pulling application before you select your puller. Notice that a significant amount of
force can be exerted with a puller. Respect these forces and always observe all safety precautions
and warnings.
OPERATION
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Figure 3 Figure 4 Figure 5