PATENTED

R&L Releasing Tap Holder

The patented unique releasing mechanism of the Somma R & L Tap Holder is unequalled for dependability 

and accuracy which resulted in its selection for usage as original equipment by many machine tool manufacturers.

FEATURES
• For right or left hand threading
• Eases tap into work for better matching of threads
• No spring plungers to wear or break
• No. 000 size is extremely sensitive for small taps when used on high speed machines

• Simple operation (see diagrams below)

FIG 1: Ready to start threading operation, clutch slightly engaged (A) and (C).

FIG 2: When tap contacts work, clutch ring (A) slides forward to fully engage spindle (C) for positive driving power.

FIG 3: When end of pullout is reached clutch ring (A) springs back instantly, leaving ample clearance between contact points of clutch ring and spindle, preventing re-engagement or hammering of clutch points in case turret advances slightly after release.

NOTE: TH2-NBG, TH3-NBG AND TH4-NBG have special shank diameter and length 

for use on New Britain Gridley automatics.

Click here for Tap Holder Bushings.

* PLUS 31/32 DIA. x 15/16 LONG PROJECTION