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ER40 Collets - Metric

Metric ER40 Collets

Code Nominal
Size
Clamping
Range (mm)
050-110-40030 3mm 2.0-3.0
050-110-40035 3.5mm 2.5-3.5
050-110-40040 4mm 3.0-4.0
050-110-40050 5mm 4.0-5.0
050-110-40060 6mm 5.0-6.0
050-110-40070 7mm 6.0-7.0
050-110-40080 8mm 7.0-8.0
050-110-40090 9mm 8.0-9.0
050-110-40100 10mm 9.0-10.0
050-110-40110 11mm 10.0-11.0
050-110-40120 12mm 11.0-12.0
050-110-40130 13mm 12.0-13.0
050-110-40140 14mm 13.0-14.0
050-110-40150 15mm 14.0-15.0
050-110-40160 16mm 15.0-16.0
050-110-40170 17mm 16.0-17.0
050-110-40180 18mm 17.0-18.0
050-110-40190 19mm 18.0-19.0
050-110-40200 20mm 19.0-20.0
050-110-40210 21mm 20.0-21.0
050-110-40220 22mm 21.0-22.0
050-110-40230 23mm 22.0-23.0
050-110-40240 24mm 23.0-24.0
050-110-40250 25mm 24.0-25.0
050-110-40260 26mm 25.0-26.0

Why you should use ER Collets

Unlike R8, 5C and Morse Taper collets, ER collets are slotted alternately from both ends and therefore compress onto the cutter along the whole length of the collet when tightened. This not only provides a better grip on the cutter shank but also allows some variation (typically 1mm) in shank sizes that may be used in a single collet (the ‘Clamping Range’). The smaller size collets are best used to hold cutters no more than 0.5mm below the nominal size.

Fitting and releasing an ER collet

How you should use ER Collets

Inspecting the inside of our ER collet nuts reveals an internal flange that has been machined eccentric to the main axis of the nut. This is not a machining error but is designed that way to lock onto the groove of the collet and aid its release from the chuck body.

For this feature to work properly, the collet must be mounted in the nut first before fitting the assembly into the chuck body. To mount the collet in the nut, insert it on an angle, turn slightly and push it into the nut until it clicks into place on the eccentric flange. The cutter may now be fitted and the assembly tightened hard into the chuck body.

To remove the cutter, slacken and undo the nut until resistance is felt. Then, using a collet wrench, further undo the nut until the collet is released from the chuck body. Removal of the collet from the nut is the reverse of the mounting procedure.

050-110-40030 ER40 Collet 3mm £6.93 Excl.VAT
£8.32 Inc.VAT
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050-110-40035 ER40 Collet 3.5mm £6.93 Excl.VAT
£8.32 Inc.VAT
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050-110-40040 ER40 Collet 4mm £5.93 Excl.VAT
£7.12 Inc.VAT
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050-110-40050 ER40 Collet 5mm £5.93 Excl.VAT
£7.12 Inc.VAT
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050-110-40060 ER40 Collet 6mm £5.93 Excl.VAT
£7.12 Inc.VAT
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050-110-40070 ER40 Collet 7mm £5.93 Excl.VAT
£7.12 Inc.VAT
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050-110-40080 ER40 Collet 8mm £5.93 Excl.VAT
£7.12 Inc.VAT
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050-110-40090 ER40 Collet 9mm £5.93 Excl.VAT
£7.12 Inc.VAT
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050-110-40100 ER40 Collet 10mm £5.93 Excl.VAT
£7.12 Inc.VAT
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050-110-40110 ER40 Collet 11mm £5.93 Excl.VAT
£7.12 Inc.VAT
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050-110-40120 ER40 Collet 12mm £5.93 Excl.VAT
£7.12 Inc.VAT
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050-110-40130 ER40 Collet 13mm £5.93 Excl.VAT
£7.12 Inc.VAT
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050-110-40140 ER40 Collet 14mm £5.93 Excl.VAT
£7.12 Inc.VAT
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050-110-40150 ER40 Collet 15mm £5.93 Excl.VAT
£7.12 Inc.VAT
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050-110-40160 ER40 Collet 16mm £5.93 Excl.VAT
£7.12 Inc.VAT
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050-110-40170 ER40 Collet 17mm £5.93 Excl.VAT
£7.12 Inc.VAT
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050-110-40180 ER40 Collet 18mm £5.93 Excl.VAT
£7.12 Inc.VAT
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050-110-40190 ER40 Collet 19mm £5.93 Excl.VAT
£7.12 Inc.VAT
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050-110-40200 ER40 Collet 20mm £5.93 Excl.VAT
£7.12 Inc.VAT
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050-110-40210 ER40 Collet 21mm £5.93 Excl.VAT
£7.12 Inc.VAT
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050-110-40220 ER40 Collet 22mm £5.93 Excl.VAT
£7.12 Inc.VAT
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050-110-40230 ER40 Collet 23mm £5.93 Excl.VAT
£7.12 Inc.VAT
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050-110-40240 ER40 Collet 24mm £5.93 Excl.VAT
£7.12 Inc.VAT
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050-110-40250 ER40 Collet 25mm £5.93 Excl.VAT
£7.12 Inc.VAT
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050-110-40260 ER40 Collet 26mm £5.93 Excl.VAT
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050-110-40290 ER40 25pc Collet Set - Metric £106.36 Excl.VAT
£127.63 Inc.VAT
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