Expanding Mandrels

Press Release
PRWeb News Release
A K.O. LEE Expandable Mandrel is a time-tested tool for grinding, turning and milling operations. Built for a machine like Expanding Mandrels lathe or Expanding Mandrels mill, an Expanding Mandrel workholding will hold work from thin sleeves and bushings to heavy casting and forgings. K.O. LEE’s mandrels are sized to fit 3/8″ to 5 1/2″ (9.5 to 139.7mm) holes.

new-expanding-mandrels

Specifications

Specifications are subject to change without prior notice.
There is a K.O. LEE expanding mandrel set for every shop. Any mandrel may be purchased separately for production operations. A full set of K.O. LEE expanding mandrels will eliminate making and stocking separate mandrels for every job.

A large bearing surface on all sleeves provides a positive grip on heavy jobs, prevents slip and chatter and holds thin sleeves and bushings without distortion. Work can be held in any position on sleeve and may overhang on either or both ends for facing operations.
Precision ground arbors and sleeves provide accuracy of 0.001″ (0.025mm) or better. Large bearing surface minimize wear.

Auxiliary centers are a K.O. LEE feature, providing a large bearing surface and oil reservoir. The auxiliary centers also prevent damage to arbor center, prolong arbor life and are inexpensive to replace.

General Purpose Series

mandrelset
Five mandrels ranging from 3/8″ to 2 1/2″ (9.53 to 63.5mm) hole. Recommended for tool room, home shop and light production work.

M90
Three smallest general purpose mandrels, M0, M1, M2 ranging from 3/8″ to 1″ (9.5 to 25mm). Shipping weight 3 lbs. (1.5kg)

M100
Four general purpose mandrels M0, M1, M2, M3 ranging from 3/8″ to 1 9/16″ (9.5 to 40mm).
Shipping weight 9 lbs. (4kg)

M100X
Three general purpose mandrels M1, M2, M3 ranging from 1/2″ to 1 9/16″ (13 to 40mm).
Shipping weight 9 lbs. (4kg)

M101
Five general purpose mandrels M0, M1, M2, M3, M4 ranging from 3/8″ to 2 1/2″ (10 to 63.5mm).
Shipping weight 18 lbs. (8kg)

Heavy Duty Series
Mandrels ranging from 11/16″ to 5 1/2″ (17.5 to 138mm) hole. Recommended for production line operations including heavy roughing cuts.

M200
Four mandrels; two heavy duty M0, M1, M25, M26 ranging from 3/8″ to 1″ (9.5 to 25mm).
Shipping weight 4 lbs. (2kg)

M200X
Four mandrels; two heavy duty M1, M2, M35, M36 ranging from 1/2″ to 1 9/16″ (13 to 40mm).
Shipping weight 12 lbs. (5.5kg)

M201
Two heavy duty mandrels M35 and M36 ranging from 1″ to 9/16″ (25 to 40mm).
Shipping weight 8 lbs. (4kg)

M202
Two heavy duty mandrels M45 to M46 ranging from 1 9/16″ to 2 1/2″ (40 to 64mm).
Shipping weight 21 lbs. (9.5kg)

M201 Mandrel Box for sets M90, M200, M201, M100X (Mandrel Box is no longer available.)

M101B Mandrel Box for sets M100, M101, M202, M200X (Mandrel Box is no longer available.)

Specifications are subject to change without prior notice.

DOWNLOAD COMPLETE MANDRELS SPECS DOCUMENT HERE

 

KM6 4" to 5-1/2" (101.6 to 139.7mm)

KM6 4″ to 5-1/2″ (101.6 to 139.7mm)

KM5B 2-1/2" to 3-1/4" (63.5-82.55mm)

KM5B 2-1/2″ to 3-1/4″ (63.5-82.55mm)

KM2 11/16" to 1" (17.46 to 25.4mm)

KM2 11/16″ to 1″ (17.46 to 25.4mm)

General Purpose

Five mandrels ranging from 3/8″ to 2 1/2″ (9.53 to 63.5mm) hole. Recommended for tool room, home shop and light production work.

Complete Mandrel and sleeve sets Arbors Only Sleeves Only
Part Number Inch Range Millimeter Part Number Inch Length Millimeter Part Number Inch Length Millimeter
KM0 3/8" to 1/2" 9.53 to 12.7mm KM0A 4-1/2" 114.3mm KM0S 1-1/4" 31.75mm
KM1 1/2" to 11/16" 12.7 to 17.46mm KM1A 5-3/4" 146.05mm KM1S 1-1/2" 38.1mm
KM2 11/16" to 1" 17.46 to 25.4mm KM2A 9-1/4" 234.95mm KM2S 2-1/2" 63.5mm
KM3 1" to 1-9/16" 25.4 to 39.68mm KM3A 12-1/4" 311.15mm KM3S 3" 76.2mm
KM4 1-9/16" to 2-1/2" 39.68 to 63.5mm KM4A 16-3/4" 425.45mm KM4S 4-1/4" 107.95mm
KM90 3/8" to 1" 9.53 to 25.4mm KM0A 4-1/2" 114.3mm KM0S 1-1/4" 31.75mm
KM1A 5-3/4" 146.05mm KM1S 1-1/2" 38.1mm
KM2A 9-1/4" 234.95mm KM2S 2-1/2" 63.5mm
KM100 3/8" to 1-9/16" 9.53 to 39.68mm KM0A 4-1/2" 114.3mm KM0S 1-1/4" 31.75mm
KM1A 5-3/4" 38.1mm KM1A 5-3/4" 146.05mm
KM2A 9-1/4" 234.95mm KM2S 2-1/2" 63.5mm
KM3A 12-1/4" 311.15mm KM3S 3" 76.2mm
KM100X 1/2" to 1-9/16" 12.7 to 39.68mm KM1A 5-3/4" 146.05mm KM1S 1-1/2" 38.1mm
KM2A 9-1/4" 234.95mm KM2S 2-1/2" 63.5mm
KM3A 12-1/4" 311.15mm KM3S 3" 76.2mm
KM101 3/8" to 2-1/2" 9.53 to 63.5mm KM0A 4-1/2" 114.3mm KM0S 1-1/4" 31.75mm
KM1A 5-3/4" 146.05mm KM1S 1-1/2" 38.1mm
KM2A 9-1/4" 234.95mm KM2S 2-1/2" 63.5mm
KM3A 12-1/4" 311.15mm KM3S 3" 76.2mm
KM4A 16-3/4" 425.45mm KM4S 4-1/4" 107.95mm

Heavy Duty

Mandrels ranging from 11/16″ to 5 1/2″ (17.5 to 138mm) hole. Recommended for production line operations including heavy roughing cuts.

Complete Mandrel and sleeve sets Arbors Only Sleeves Only
Part Number Inch Range Millimeter Part Number Inch Length Millimeter Part Number Inch Length Millimeter
KM25 11/16" to 27/32" 17.46 to 21.43mm KM25A 8-1/4" 209.55mm KM25S 2-1/4" 57.15mm
KM26 27/32" to 1" 21.43 to 25.4mm KM26A 8-1/4" 209.55mm KM26S 2-1/2" 63.5mm
KM35 1" to 1-9/32" 25.4 to 32.53mm KM35A 12-1/4" 311.15mm KM35S 3-1/4" 82.55mm
KM36 1-9/32" to 1-9/16" 32.53 to 39.69mm KM36A 12-/14" 311.15mm KM36S 3-1/4" 82.55mm
KM45 1-9/16" to 2-1/32" 39.69 to 51.58mm KM45A 15-1/2" 393.7mm KM45S 4-1/4" 107.95mm
KM46 2-1/32" to 2-1/2" 51.58 to 63.5mm KM46A 15-1/2" 393.7mm KM46S 4-1/4" 107.95mm
KM5B 2-1/2" to 3-1/4" 63.5 to 82.55mm KM5A 17-3/4" 450.85mm KM5S 7" 177.8mm
KM5C 3-1/4" to 4" 82.55 to 101.6mm KM5-6A 18" 457.2mm KM5S 7" 177.8mm
KM55 3-1/4" to 4-3/4" 82.55 to 120.65mm KM5-6A 18" 457.2mm KM5S 7" 177.8mm
KM6S 7" 177.8mm
KM6B 4" to 4-3/4" 101.6 to 120.65mm KM5-6A 18" 457.2mm KM6S 7" 177.8mm
KM6C 4-3/4" to 5-1/2" 120.65 to 139.7mm KM6A 18-1/4" 463.55mm KM6S 7" 177.8mm
KM5 2-1/2" to 4" 63.5 to 101.6mm KM5A 17-3/4" 450.85mm KM5S 7" 177.8mm
KM5-6A 18" 457.2mm
KM6 4" to 5-1/2" 101.6 to 139.7mm KM5-6A 18" 457.2mm KM6S 7" 177.8mm
KM6A 18-1/4" 463.55mm
KM7 2-1/2" to 5-1/2" 63.5 to 139.7mm KM5A 17-3/4" 450.85mm KM5S 7" 177.8mm
KM5-6A 18" 457.2mm KM6S 7" 177.8mm
KM6A 18-1/4" 463.55mm
KM200 3/8" to 1" 9.53 to 25.4mm KM0A 4-1/2" 114.3mm KM0S 1-1/4" 31.75mm
KM1A 5-3/4" 146.05mm KM1S 1-1/2" 38.1mm
KM25A 8-1/4" 209.55mm KM25S 2-1/4" 57.1mm
KM26A 8-1/4" 209.55mm KM26S 2-1/2" 63.5mm
KM200X 1/2" to 1-9/16" 12.7 to 39.68mm KM1A 5-3/4" 146.05mm KM1S 1-1/2" 38.1mm
KM2A 9-1/4" 234.95mm KM2S 2-1/2" 63.5mm
KM35A 12-1/4" 311.15mm KM35S 3-1/4" 82.55mm
KM36A 12-/14" 311.15mm KM36S 3-1/4" 82.55mm
KM201 1" to 1-9/16" 25.4 to 39.68mm KM35A 12-1/4" 311.15mm KM35S 3-1/4" 82.55mm
KM36A 12-/14" 311.15mm KM36S 3-1/4" 82.55mm
KM202 1-9/16" to 2-1/2" 39.68 to 63.5mm KM45A 15-1/2" 393.7mm KM45S 4-1/4" 107.95mm
KM46A 15-1/2" 393.7mm KM46S 4-1/4" 107.95mm

General Purpose

Five mandrels ranging from 3/8″ to 2 1/2″ (9.53 to 63.5mm) hole. Recommended for tool room, home shop and light production work.

Complete Mandrel and sleeve sets

Part Number Inch Range Millimeter
KM0 3/8" to 1/2" 9.53 to 12.7mm
KM1 1/2" to 11/16" 12.7 to 17.46mm
KM2 11/16" to 1" 17.46 to 25.4mm
KM3 1" to 1-9/16" 25.4 to 39.68mm
KM4 1-9/16" to 2-1/2" 39.68 to 63.5
KM90 3/8" to 1" 9.53 to 25.4
KM100 3/8" to 1-9/16" 9.53 to 39.6
KM100X 1/2" to 1-9/16" 12.7 to 39.
KM101 3/8" to 2-1/2" 9.53 to 63.5

Arbors Only

Part Number Inch Length Millimeter
KM0A 4-1/2" 114.3mm
KM1A 5-3/4" 146.05mm
KM2A 9-1/4" 234.95mm
KM3A 12-1/4" 311.15mm
KM4A 16-3/4" 425.45mm
KM0A 4-1/2" 114.3mm
KM1A 5-3/4" 146.05mm
KM2A 9-1/4" 234.95mm
KM0A 4-1/2" 114.3mm
KM1A 5-3/4" 38.1mm
KM2A 9-1/4" 234.95mm
KM3A 12-1/4" 311.15mm
KM1A 5-3/4" 146.05mm
KM2A 9-1/4" 234.95mm
KM3A 12-1/4" 311.15mm
KM0A 4-1/2" 114.3mm
KM1A 5-3/4" 146.05mm
KM2A 9-1/4" 234.95mm
KM3A 12-1/4" 311.15mm
KM4A 16-3/4" 425.45mm

Sleeves Only

Part Number Inch Length Millimeter
KM0S 1-1/4" 31.75mm
KM1S 1-1/2" 38.1mm
KM2S 2-1/2" 63.5mm
KM3S 3" 76.2mm
KM4S 4-1/4" 107.95mm
KM0S 1-1/4" 31.75mm
KM1S 1-1/2" 38.1mm
KM2S 2-1/2" 63.5mm
KM0S 1-1/4" 31.75mm
KM1A 5-3/4" 146.05mm
KM2S 2-1/2" 63.5mm
KM3S 3" 76.2mm
KM1S 1-1/2" 38.1mm
KM2S 2-1/2" 63.5mm
KM3S 3" 76.2mm
KM0S 1-1/4" 31.75mm
KM1S 1-1/2" 38.1mm
KM2S 2-1/2" 63.5mm
KM3S 3" 76.2mm
KM4S 4-1/4" 107.95mm

Heavy Duty

Mandrels ranging from 11/16″ to 5 1/2″ (17.5 to 138mm) hole. Recommended for production line operations including heavy roughing cuts.

Complete Mandrel and sleeve sets

Part Number Inch Range Millimeter
KM25 11/16" to 27/32" 17.46 to 21.43mm
KM26 27/32" to 1" 21.43 to 25.4mm
KM35 1" to 1-9/32" 25.4 to 32.53mm
KM36 1-9/32" to 1-9/16" 32.53 to 39.69mm
KM45 1-9/16" to 2-1/32" 39.69 to 51.58mm
KM46 2-1/32" to 2-1/2" 51.58 to 63.5mm
KM5B 2-1/2" to 3-1/4" 63.5 to 82.55mm
KM5C 3-1/4" to 4" 82.55 to 101.6mm
KM55 3-1/4" to 4-3/4" 82.55 to 120.65mm
KM6B 4" to 4-3/4" 101.6 to 120.65mm
KM6C 4-3/4" to 5-1/2" 120.65 to 139.7mm
KM5 2-1/2" to 4" 63.5 to 101.6mm
KM6 4" to 5-1/2" 101.6 to 139.7mm
KM7 2-1/2" to 5-1/2" 63.5 to 139.7mm
KM200 3/8" to 1" 9.53 to 25.4mm
KM200X 1/2" to 1-9/16" 12.7 to 39.68mm
KM201 1" to 1-9/16" 25.4 to 39.68mm
KM202 1-9/16" to 2-1/2" 39.68 to 63.5mm

Arbors Only

Part Number Inch Length Millimeter
KM25A 8-1/4" 209.55mm
KM26A 8-1/4" 209.55mm
KM35A 12-1/4" 311.15mm
KM36A 12-/14" 311.15mm
KM45A 15-1/2" 393.7mm
KM46A 15-1/2" 393.7mm
KM5A 17-3/4" 450.85mm
KM5-6A 18" 457.2mm
KM5-6A 18" 457.2mm
KM5-6A 18" 457.2mm
KM6A 18-1/4" 463.55mm
KM5A 17-3/4" 450.85mm
KM5-6A 18" 457.2mm
KM5A 17-3/4" 450.85mm
KM5-6A 18" 457.2mm
KM6A 18-1/4" 463.55mm
KM0A 4-1/2" 114.3mm
KM1A 5-3/4" 146.05mm
KM25A 8-1/4" 209.55mm
KM26A 8-1/4" 209.55mm
KM1A 5-3/4" 146.05mm
KM2A 9-1/4" 234.95mm
KM35A 12-1/4" 311.15mm
KM36A 12-/14" 311.15mm
KM35A 12-1/4" 311.15mm
KM36A 12-/14" 311.15mm
KM45A 15-1/2" 393.7mm
KM46A 15-1/2" 393.7mm

Sleeves Only

Part Number Inch Length Millimeter
KM25S 2-1/4" 57.15mm
KM26S 2-1/2" 63.5mm
KM35S 3-1/4" 82.55mm
KM36S 3-1/4" 82.55mm
KM45S 4-1/4" 107.95mm
KM46S 4-1/4" 107.95mm
KM5S 7" 177.8mm
KM5S 7" 177.8mm
KM5S 7" 177.8mm
KM6S 7" 177.8mm
KM6S 7" 177.8mm
KM6S 7" 177.8mm
KM5S 7" 177.8mm
KM5-6A 18" 457.2mm
KM6S 7" 177.8mm
KM6A 18-1/4" 463.55mm
KM5S 7" 177.8mm
KM6S 7" 177.8mm
KM0S 1-1/4" 31.75mm
KM1S 1-1/2" 38.1mm
KM25S 2-1/4" 57.1mm
KM26S 2-1/2" 63.5mm
KM1S 1-1/2" 38.1mm
KM2S 2-1/2" 63.5mm
KM35S 3-1/4" 82.55mm
KM36S 3-1/4" 82.55mm
KM35S 3-1/4" 82.55mm
KM36S 3-1/4" 82.55mm
KM45S 4-1/4" 107.95mm
KM46S 4-1/4" 107.95mm

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