Precision Collets ER25 Precision Collets ER25 For precision and reliability. For chuck capacity up to 16mm. This premium product ensures enhanced accuracy and minimized vibration for optimal performances. The spring collet design provides for easy installation and removal of tools.

Part #	Inside Dia	Outside Dia.	Clamping Tolerance
27-25020	2	26	2 - 1mm
27-25030	3	26	3 - 2mm
27-25035	3.5	26
27-25040	4	26	4 - 3mm
27-25050	5	26	5 - 4mm
27-25060	6	26	6 - 5mm
27-25070	7	26	7 - 6mm
27-25080	8	26	8 - 7mm
27-25090	9	26	9 - 8mm
27-25100	10	26	10 - 9mm
27-25110	11	26	11 - 10mm
27-25120	12	26	12 - 11mm
27-25130	13	26	13 - 12mm
27-25140	14	26	14 - 13mm
27-25150	15	26	15 - 14mm
27-25160	16	26	16 - 15mm

Q: How often should these be changed?

A: Roughly every 400 - 600 working hours. This is because they lose their elasticity and do not grip evenly and precisely any more.

Q: What is the difference between standard type and ultra precision type?

A: The run out rating with ultra precision is twice as accurate as the standard type.