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 NumberD Shank DiameterL Overall LengthL1 Lock Nut LengthD1 Lock Nut DiameterHex. Wrench SizeMax. Dia. Thru ShankER Collet SeriesChuck CapacityWrench Part NumberLock Nut Part Number
SPH-ER11-05000.5003.500.470.629/16″1/4″ER11.019 – .276W-0562LN-ER11
SPH-ER11-06250.6253.500.470.629/16″1/4″ER11.019 – .276W-0562LN-ER11
SPH-ER16-06250.6253.650.680.8613/16″3/8″ER16.019 – .394W-0812LN-ER16
SPH-ER16-07500.7503.650.680.8613/16″3/8″ER16.019 – .394W-0812LN-ER16
SPH-ER20-06250.6253.750.781.101″3/8″ER20.039 – .512W-1000LN-ER20
SPH-ER20-07500.7503.750.781.101″3/8″ER20.039 – .512W-1000LN-ER20
SPH-ER20-10001.0003.750.781.101″9/16″ER20.039 – .512W-1000LN-ER20
SPH-ER25-10001.0006.100.841.361-1/4″3/4″ER25.039 – .630W-1250LN-ER25
SPH-ER25-12501.2506.100.841.361-1/4″3/4″ER25.039 – .630W-1250LN-ER25
SPH-ER32-10001.0006.200.951.611-1/2″9/16″ER32.039 – .787W-1500LN-ER32
SPH-ER32-12501.2506.200.951.611-1/2″3/4″ER32.039 – .787W-1500LN-ER32
SPH-ER32-15001.5006.200.951.611-1/2″3/4″ER32.039 – .787W-1500LN-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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