Internal Helical Slot Laps, Arbors, And Expanders

Standard Internal Laps

are manufactured undersize to allow for stock removal and abrasive clearance. Order a 1/4″ lap to finish a .2500 dia. bore.

Radial Grooves

are recommended for most lapping applications; however, there are instances when non-grooved laps are recommended, such as when lapping interrupted bores.

SPECIAL SIZE AND/OR LENGTH LAPS AND ARBORS CAN BE MADE TO SUIT YOUR APPLICATION.

*Standard lap arbors 4/0 thru 5 are manufactured without centers. These arbors are available with centers (additional charge)

Part # With Radial Grooves	Part # No Radial Grooves	A Lap Size	B Length	Arbor	A Shank Diameter	B Shank Length	C Taper Length	Expander	Lap Puller
N/A	3/64 NSIL	3/64	1/2	4/0 SLA*	1/8	3/4	1-1/2	4/0 SLE	0LP
N/A	1/16 SIL	1/16	5/8	3/0 SLA*	1/8	3/4	1-1/2	3/0 SLE	0LP
N/A	5/64 SIL	5/64	5/8	3/0 SLA*	1/8	3/4	1-1/2	3/0 SLE	0LP
N/A	3/32 SIL	3/32	3/4	2/0 SLA*	1/8	3/4	1-5/8	2/0 SLE	0LP
N/A	7/64 SIL	7/64	3/4	2/0 SLA*	1/8	3/4	1-5/8	2/0 SLE	0LP
N/A	1/8 SIL	1/8	7/8	0 SLA*	1/8	3/4	1-3/4	0 SLE	0LP
N/A	5/32 SIL	5/32	7/8	0 SLA*	1/8	3/4	1-3/4	0 SLE	0LP
N/A	9/64 SIL	9/64	7/8	0 SLA*	1/8	3/4	1-3/4	0 SLE	0LP
N/A	11/64 SIL	11/64	7/8	0 SLA*	1/8	3/4	1-3/4	0 SLE	0LP
3/16 SILS	3/16 SILSNRG	3/16	1	1 SLA*	3/16	1	2-3/4	1 SLE	1LP

 

Lap Pullers

Part #	Description	Arbor	Lap Size
0LP	Extra Small Lap Puller	Fits Arbors 4/0 thru 0	Lap Sizes 3/64″ to 11/64″
1LP	Small Lap Puller	Fits Arbors 1 thru 7	Lap Sizes 3/16″ to 39/64″
2LP	Large Lap Puller	Fits Arbors 8 thru 11	Lap Sizes 5/8″ to 1-1/4″
3LP	Extra Large Lap Puller	Fits Arbors 12 thru 16	Lap Sizes 1-5/16″ to 3″