Product Description

Part includes Lock Nut & Back-Up Screw (where applicable).

pchgroup

Straight Shank Collet Chucks
Short “Stubby” ER Collet Holders 3.5″ – 6.2″ OAL

Replacement Lock Nuts &
Open-end hex wrenches
are also available
(Part Numbers In Table Below)

Short ER Collet Holders

For use on CNC Mills

  • Manufactured in USA from high grade, heat-treated alloy steel
  • Black Oxide finish for corrosion prevention
  • Comes equipped with inside back-up screw and Lock Nut
  • Tighten lock nut with a standard open-end wrench
    (no special wrench needed, unlike other brands)
  • Smaller diameter lock nut than most brands make
    these ideal for machining hard-to-reach surfaces.

ER lock nuts interchangeable with ER “mini” lock nuts of other manufacturers.

Rovi

Table Of Dimensions

Chuck Part Number D Shank Diameter L Overall Length L1 Lock Nut Length D1 Lock Nut Diameter Hex. Wrench Size Max. Dia. Thru Shank ER Collet Series Chuck Capacity Wrench Part Number Lock Nut Part Number
SPH-ER11-0500 0.500 3.50 0.47 0.62 9/16″ 1/4″ ER11 .019 – .276 W-0562 LN-ER11
SPH-ER11-0625 0.625 3.50 0.47 0.62 9/16″ 1/4″ ER11 .019 – .276 W-0562 LN-ER11
SPH-ER16-0625 0.625 3.65 0.68 0.86 13/16″ 3/8″ ER16 .019 – .394 W-0812 LN-ER16
SPH-ER16-0750 0.750 3.65 0.68 0.86 13/16″ 3/8″ ER16 .019 – .394 W-0812 LN-ER16
SPH-ER20-0625 0.625 3.75 0.78 1.10 1″ 3/8″ ER20 .039 – .512 W-1000 LN-ER20
SPH-ER20-0750 0.750 3.75 0.78 1.10 1″ 3/8″ ER20 .039 – .512 W-1000 LN-ER20
SPH-ER20-1000 1.000 3.75 0.78 1.10 1″ 9/16″ ER20 .039 – .512 W-1000 LN-ER20
SPH-ER25-1000 1.000 6.10 0.84 1.36 1-1/4″ 3/4″ ER25 .039 – .630 W-1250 LN-ER25
SPH-ER25-1250 1.250 6.10 0.84 1.36 1-1/4″ 3/4″ ER25 .039 – .630 W-1250 LN-ER25
SPH-ER32-1000 1.000 6.20 0.95 1.61 1-1/2″ 9/16″ ER32 .039 – .787 W-1500 LN-ER32
SPH-ER32-1250 1.250 6.20 0.95 1.61 1-1/2″ 3/4″ ER32 .039 – .787 W-1500 LN-ER32
SPH-ER32-1500 1.500 6.20 0.95 1.61 1-1/2″ 3/4″ ER32 .039 – .787 W-1500 LN-ER32

Images to the right (second image in Product Gallery below main image)
All back-up screws have 1/8″ hex. socket
DO NOT OVER TIGHTEN LOCK NUT, ALWAYS USE BACKUP SCREW

SPHDIAG

Assembly Instructions

Long ER Collet Holders

Add To Cart

$69.00$145.00

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Product Images

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