• All multiple spindle heads above have a gear ratio of 1:1
  • Tapping capacities are base on use of a spiral or point tap. The capacities are based on depth of tapping limited to 1.5 times the tap diameter.
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Model #

Spindle Center Distance (min to max)

Erickson Collet Series

Chucking Capacity (inches/mm)

Type of Tap Holding

Applicable Synchro Tapper Model

2TC-E1040ACU N/A 0.91 ∼ 3.58 inches (23 ∼ 91 mm) N/A JTC N/A #0 to #8 (M1.6 to M4) N/A Centering N/A STB-H108U STB-L108U
2TC-E308OAFU N/A 0.91 ∼ 3.58 inches (23 ∼ 91 mm) N/A JTC N/A #3 to 5/16 (M3 to M8) N/A Floating #0.008 (0.2) N/A STB-H108U STB-L108U
2TD-60120AFU N/A 1.91 ∼ 6.57 inches (48.5 ∼ 167 mm) N/A KTC N/A 1/4 to 1/2 (M6 to M12) N/A Floating #0.016 (0.4) N/A STC-P316U
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