Hemingway Kits
The Hemingway Toolroom
Tool Holding and Positioning
Oxford Collet Chuck
Oxford Collet Chuck
Ref: HK 1680
Double cone collets have some very important features for the smaller workshop:
* Clamping force relative to axial length is formidable! Although they are not threaded like Auto-Lok collets, analysis and experience lead us to state that, provided at least 1" of a tool is engaged, your tool will snap long before ER collets slip.
* Each ER collet holds a 1mm range of diameters. For example, a Ø6-7mm collet merrily holds Ø1/4" (Ø6.35mm) tools or material. Uniquely, the collets are also able to hold drills and cutters by their flutes - a practice not recommended by Jacobs or Albrecht for example!
* ER collets are self extracting - as you loosen the closing ring, an ejector mechanism pulls the collet clear. No blood, no sweat, no tears!
* Finally, ER collets are quite affordable.
The Oxford chuck has been very carefully designed for the small workshop. The ER20 format (DIN standard 6499) encompasses Ø1.0mm to Ø13mm with 12 collets. A full set allows every drill, end mill, tap, arbor or work piece from No.60 to Ø1/2" to be held firmly and concentrically in your spindle or tailstock.
With a 2MT shank, the chuck is manufactured from high tensile steel and is tapped 3/8" BSW for a draw bar. As the Oxford chuck is hollow, drills (up to Ø8mm) held on their flutes can be accommodated with only a stub length protruding, making the need for centre drilling obsolete.
Where daylight is limited, the Oxford chuck can really increase the scope of your equipment. The collet nose stands out just 60mm (2 5/16") from the spindle compared with 87mm for a standard ½" drill chuck
The Oxford chuck is equally adept at work holding and tool holding. Another not-so-obvious application is "work support". With the chuck mounted in your lathe's tailstock you can oil a collet and close it to lightly touch work held in the headstock, giving close support to slender jobs without the fun of setting up your fixed steady.
The Oxford Collet Chuck comes complete with body, closing ring and C spanner. ER20 collets should be ordered SEPERATELY below.
Price:
£55.90
Seperate ER20 Collets
Ref: QS300x
Add seperate collets as required.
Diameter
QS 3002: ER20 Collet Ø1.0 - 2.0mm (£14.50)
QS 3003: ER20 Collet Ø2.0 - 3.0mm (£14.50)
QS 3004: ER20 Collet Ø3.0 - 4.0mm (£14.50)
QS 3005: ER20 Collet Ø4.0 - 5.0mm (£14.50)
QS 3006: ER20 Collet Ø5.0 - 6.0mm (£14.50)
QS 3007: ER20 Collet Ø6.0 - 7.0mm (£14.50)
QS 3008: ER20 Collet Ø7.0 - 8.0mm (£14.50)
QS 3009: ER20 Collet Ø8.0 - 9.0mm (£14.50)
QS 3010: ER20 Collet Ø9.0 - 10.0mm (£14.50)
QS 3011: ER20 Collet Ø10.0 - 11.0mm (£14.50)
QS 3012: ER20 Collet Ø11.0 - 12.0mm (£14.50)
QS 3013: ER20 Collet Ø12.0 - 13.0mm (£14.50)
