Technical Information – Insert Holders

Technique external thread

Calculation of the helix-angle ß:

Rule of thumb: P x 20 / D = Angle

n = Number of threads
P = division (= pitch with one-start thread)
D = Thread diameter

Thread cutting insert holders standard supplied with 1° insert inclination angle. In Part to achieve the desired helix-angle, appropriate
spacers must be selected

Spacers for 3/8” / ER16 Inserts

Technique 1

Technique 2

Technique 3

Technique 4

The standard spacers UR16-01M and UL16-01M are each supplied together with the insert holders for threading

Spacers

	Part # / Spacer	Spanner	Part # / Screw	for Holder
	UR/L16-xxM UR/L16-xxML	T10	calmping screw KS-M3-T10	SER/L…K..16
	SU-DC11	T9	SU-M5-35	SDAC../SDJC../SDNC..