Cutting tools last longer when you…Torque it right!

Over-tightening can distort collets, causing
runout problems and premature failure of the collet, tool holder and cutting tool.
Improperly tightened tool holders are a safety hazard. Always use a tightening stand and torque wrench to tighten collet nuts and pull studs.
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Collet Nut Torque Specifications
Collet Nuts |
Wrench Type |
Torque |
ER 16 |
Slotted |
45 ft/lbs |
ER 16 |
Hex |
45 ft/lbs |
ER 20 |
Slotted |
67 ft/lbs |
ER 20 |
Hex |
67 ft/lbs |
ER 25 |
Slotted |
85 ft/lbs |
ER 25 Mini Nut |
Castle |
25 ft/lbs |
ER 32 |
Slotted |
112 ft/lbs |
ER 40 |
Slotted |
126 ft/lbs |
SYOZ 25/TG 100 |
Hook |
90 ft/lbs |
TG 75 |
Hex |
90 ft/lbs |
TG 100 |
Hex |
90 ft/lbs |
Retention Knobs Torque Specifications
Retention Knobs |
Wrench Flats |
Drive |
Torque |
All 40 Taper |
0.750" |
3/8" |
76 ft/lbs |
CAT 50 Taper |
1.250" |
1/2" |
99 ft/lbs |
BT 30 Taper |
0.535" |
1/4" |
36 ft/lbs |
BT 50 Taper |
1.187" |
1/2" |
99 ft/lbs |
ISO 20 Taper |
0.346" |
3/8" |
20 ft/lbs |
ISO 30 Taper |
0.535" |
3/8" |
36 ft/lbs |
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