MTUNR/L

16 sizes available · 8 specification fields · standard: ISO

MTUNR/L is a boring bar for internal turning that takes negative 60° triangle (T-type) inserts. It is listed here in 16 sizes, 18.3–47 mm shank height, right- and left-hand versions, each with full specifications and a dimensioned drawing. Typical use: boring, internal turning and back-facing.

Insert compatibility

This family is built for the following insert designations (as listed in the catalogue data). The exact size in each row of the table below is in the Insert designation column.

TNM. 1604..
TNM. 2204..

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Specifications

Product code	Insert designation	Cutting direction (hand)	Connection diameter (mm)	Functional length (mm)	Functional width (mm)	Shank height (mm)	Minimum working diameter (mm)
S20R MTUNL 16	TNM. 1604..	L	20	200	13	18.3	≥25
S20R MTUNR 16	TNM. 1604..	R	20	200	13	18.3	≥25
S25S MTUNL 16	TNM. 1604..	L	25	250	17	23	≥32
S25S MTUNR 16	TNM. 1604..	R	25	250	17	23	≥32
S32T MTUNL 22	TNM. 2204..	L	32	300	22	30	≥40
S32T MTUNR 16	TNM. 1604..	R	32	300	22	30	≥40
S40U MTUNL 16	TNM. 1604..	L	40	350	27	37.5	≥50
S40U MTUNR 16	TNM. 1604..	R	40	350	27	37.5	≥50
S50V MTUNL 16	TNM. 1604..	L	50	400	35	47	≥63
S50V MTUNR 16	TNM. 1604..	R	50	400	35	47	≥63
S32T MTUNL 16	TNM. 1604..	L	32	300	22	30	≥40
S32T MTUNR 22	TNM. 2204..	R	32	300	22	30	≥40
S40U MTUNL 22	TNM. 2204..	L	40	350	27	37.5	≥50
S40U MTUNR 22	TNM. 2204..	R	40	350	27	37.5	≥50
S50V MTUNL 22	TNM. 2204..	L	50	400	35	47	≥63
S50V MTUNR 22	TNM. 2204..	R	50	400	35	47	≥63