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CAT-SLN Side Lock End Mill Holder

CAT-SLN side lock end mill holder in CAT40 and CAT50, with bores from 1/8" to 2" and gage lengths of 2.37" to 6". Bore sizes are imperial only: the holder takes a straight-shank end mill with a Weldon flat, and the side-set screw bears directly on that flat, the most rigid way to hold a roughing tool. CAT40 vs CAT50 is a coverage question: CAT40 (also written CT40) runs 1/8" through 1-1/2" in twelve models, while CAT50 starts at 1/4" and reaches 2" in eleven, so the small end of the range is CAT40 territory. Body diameters run 0.69" to 3.75", the dimensions to check when the fixture crowds the holder. V-flange steep taper throughout, 23 models. The pull stud is ordered separately.

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CAT-SLN Side Lock End Mill Holder Specifications 23 SKUs available

Cart+SKUPriceQuantityTotalL1 (inch)d1 (inch)d2 (inch)
CAT40-SLN1/8″-2.375″
$28
$02.37″1/8″0.69″
CAT40-SLN3/16″-2.5″
$29
$02.5″3/16″0.69″
CAT40-SLN1/4″-3″
$30
$03″1/4″0.78″
CAT40-SLN5/16″-3″
$31
$03″5/16″0.88″
CAT40-SLN3/8″-3″
$32
$03″3/8″1″
CAT40-SLN1/2″-3″
$32
$03″1/2″1.25″
CAT40-SLN5/8″-3″
$32
$03″5/8″1.5″
CAT40-SLN3/4″-3″
$32
$03″3/4″1.75″
CAT40-SLN7/8″-3.5″
$32
$03.5″7/8″1.88″
CAT40-SLN1″-4″
$38
$04″1″2″
CAT40-SLN1-1/4″-4.6″
$42
$04.6″1.25″2.5″
CAT40-SLN1-1/2″-4.5″
$45
$04.5″1.5″2.5″
CAT50-SLN1/4″-4″
$67
$04″1/4″0.78″
CAT50-SLN5/16″-4″
$67
$04″5/16″0.88″
CAT50-SLN3/8″-4″
$67
$04″3/8″1″
CAT50-SLN1/2″-4″
$67
$04″1/2″1.25″
CAT50-SLN5/8″-4″
$67
$04″5/8″1.5″
CAT50-SLN3/4″-4″
$67
$04″3/4″1.75″
CAT50-SLN7/8″-4″
$67
$04″7/8″1.88″
CAT50-SLN1″-4″
$67
$04″1″2″
CAT50-SLN1-1/4″-4.6″
$75
$04.6″1-1/4″2.5″
CAT50-SLN1-1/2″-4.6″
$75
$04.6″1-1/2″2.5″
CAT50-SLN2″-6″
$82
$06″2″3.75″
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CAT-SLN Side Lock End Mill Holder Features

A CAT V-flange tool holder: CAT40 and CAT50 steep taper

CAT40 bores 1/8" to 1-1/2"; CAT50 bores 1/4" to 2"

Gage lengths 2.37" to 6" across 23 models

Body diameters 0.69" to 3.75" for clearance checks

Side-lock screw clamps on the Weldon flat of a straight shank

Rigid grip suited to heavy roughing cuts

Imperial bores only; CAT40 and CAT50 are also written CT40 and CT50

Pull stud ordered separately

For professional reference

Technical Drawing

Fig.1
Bought Together
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