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ER25 Collets - Metric

Metric ER25 Collets

Code Nominal
Size
Clamping
Range (mm)
050-110-25010 1mm 0.5-1.0
050-110-25015 1.5mm 1.0-1.5
050-110-25020 2.0mm 1.5-2.0
050-110-25025 2.5mm 2.0-2.5
050-110-25030 3mm 2.5-3.0
050-110-25040 4mm 3.0-4.0
050-110-25050 5mm 4.0-5.0
050-110-25060 6mm 5.0-6.0
050-110-25070 7mm 6.0-7.0
050-110-25080 8mm 7.0-8.0
050-110-25090 9mm 8.0-9.0
050-110-25100 10mm 9.0-10.0
050-110-25110 11mm 10.0-11.0
050-110-25120 12mm 11.0-12.0
050-110-25130 13mm 12.0-13.0
050-110-25140 14mm 13.0-14.0
050-110-25150 15mm 14.0-15.0
050-110-25160 16mm 15.0-16.0

(The 12 pc set is a part set of 12 Collets in sizes 1mm - 16mm as detailed above EXCEPT the 6 collets included in our ER25 Milling Chuck Set (4, 6, 8, 10, 12, and 16mm)).

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.

050-110-25010 ER25 Collet 1mm £4.84 Excl.VAT
£5.81 Inc.VAT
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050-110-25015 ER25 Collet 1.5mm £4.84 Excl.VAT
£5.81 Inc.VAT
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050-110-25020 ER25 Collet 2mm RRP: £5.57 Inc.VAT
£3.84 Excl.VAT
£4.61 Inc.VAT
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050-110-25025 ER25 Collet 2.5mm £4.84 Excl.VAT
£5.81 Inc.VAT
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050-110-25030 ER25 Collet 3mm RRP: £5.57 Inc.VAT
£3.84 Excl.VAT
£4.61 Inc.VAT
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050-110-25040 ER25 Collet 4mm RRP: £5.57 Inc.VAT
£3.84 Excl.VAT
£4.61 Inc.VAT
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050-110-25050 ER25 Collet 5mm RRP: £5.57 Inc.VAT
£3.84 Excl.VAT
£4.61 Inc.VAT
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050-110-25060 ER25 Collet 6mm RRP: £5.57 Inc.VAT
£3.84 Excl.VAT
£4.61 Inc.VAT
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050-110-25070 ER25 Collet 7mm RRP: £5.57 Inc.VAT
£3.84 Excl.VAT
£4.61 Inc.VAT
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050-110-25080 ER25 Collet 8mm RRP: £5.57 Inc.VAT
£3.84 Excl.VAT
£4.61 Inc.VAT
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050-110-25090 ER25 Collet 9mm RRP: £5.57 Inc.VAT
£3.84 Excl.VAT
£4.61 Inc.VAT
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050-110-25100 ER25 Collet 10mm RRP: £5.57 Inc.VAT
£3.84 Excl.VAT
£4.61 Inc.VAT
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050-110-25110 ER25 Collet 11mm RRP: £5.57 Inc.VAT
£3.84 Excl.VAT
£4.61 Inc.VAT
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050-110-25120 ER25 Collet 12mm RRP: £5.57 Inc.VAT
£3.84 Excl.VAT
£4.61 Inc.VAT
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050-110-25130 ER25 Collet 13mm RRP: £5.57 Inc.VAT
£3.84 Excl.VAT
£4.61 Inc.VAT
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050-110-25140 ER25 Collet 14mm RRP: £5.57 Inc.VAT
£3.84 Excl.VAT
£4.61 Inc.VAT
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050-110-25150 ER25 Collet 15mm RRP: £5.57 Inc.VAT
£3.84 Excl.VAT
£4.61 Inc.VAT
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050-110-25160 ER25 Collet 16mm RRP: £5.57 Inc.VAT
£3.84 Excl.VAT
£4.61 Inc.VAT
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050-110-25175 ER25 12pc Collet Set RRP: £60.25 Inc.VAT
£45.88 Excl.VAT
£55.06 Inc.VAT
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050-110-25170 ER25 18pc Collet Set RRP: £90.40 Inc.VAT
£68.90 Excl.VAT
£82.68 Inc.VAT
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