Skill-Craft Company Inc.
Serving the Workholding Industry Since 1952

Flat-Lok Expanding Collet Assemblies: Short Series

Short Series Flat Lok Mandrel
Short Series Flat Lok Mandrel
Short Series Collet Dimensional Drawing
Short Series Collet Dimensional Drawing

Stability

  • Precisely ground flats on collet, draw screw and body
  • If slipping occurs, collet rides up on flats causing increased gripping pressure

Accuracy

  • Maintains accuracy of .0005 or better
  • Orientation of flats on assembly does not affect concentricity

Long Lasting

  • Built in safety stop provides long lasting collet functionality

Self-Releasing

  • Collets pre-loaded assuring easy part removal

Adaptability

  • Collets ground specifically to part size
  • Assembly specs can be altered in order to fit custom products
  • Standard and customizable adaptor plates available to accommodate any machine spindle mount
  • Actuation can be done by drawbar on machine or by standard and customizable air cylinders

Pull-Back

  • Allows for proper seating against part-stop
Item # Range Collet
Increments
A B C D E F G H I J K L M
SC-8100 .500-.655
15 Collets
.010 1.81 .59 .42 .25 .50 .4702
.4692
.88 3.3755
3.3750
.781 .562 3/8-24 FOR (4) 3/8
SHCS ON 2.50
B.C. EQ SPCD
FOR (4) 5/16-24
SHCS ON 2.375
B.C. EQ SPCD
SC-8200 .593-.798
20 Collets
.010 1.97 .72 .45 .25 .50 .5796
.5786
1.00 3.3755
3.3750
.781 .562 3/8-24 FOR (4) 3/8
SHCS ON 2.50
B.C. EQ SPCD
FOR (4) 5/16-24
SHCS ON 2.375
B.C. EQ SPCD
SC-8300 .718-1.000
28 Collets
.010 2.15 .84 .51 .25 .50 .7046
.7036
1.12 3.3755
3.3750
.781 .562 3/8-24 FOR (4) 3/8
SHCS ON 2.50
B.C. EQ SPCD
FOR (4) 5/16-24
SHCS ON 2.375
B.C. EQ SPCD
SC-8400 .875-1.299
20 Collets
.021 2.35 .94 .59 .18 .56 .8452
.8442
1.38 4.1255
4.1250
1.250 .750 1/2-20 FOR (4) 1/2
SHCS ON 3.12
B.C. EQ SPCD
FOR (4) 3/8-24
SHCS ON 2.875
B.C. EQ SPCD
SC-8500 1.125-1.642
24 Collets
.021 2.59 1.125 .65 .18 .56 1.0796
1.0786
1.56 4.1255
4.1250
1.250 .750 1/2-20 FOR (4) 1/2
SHCS ON 3.12
B.C. EQ SPCD
FOR (4) 3/8-24
SHCS ON 2.875
B.C. EQ SPCD
SC-8600 1.468-2.104
30 Collets
.021 2.93 1.22 .83 .12 .68 1.4077
1.4067
1.88 4.8755
4.8750
1.625 .968 3/4-16 FOR (4) 1/2
SHCS ON 3.75
B.C. EQ SPCD
FOR (4) 3/8-24
SHCS ON 3.625
B.C. EQ SPCD
SC-8700 1.937-2.821
42 Collets
.021 2.98 1.31 .79 .12 .68 1.8452
1.8442
2.38 4.8755
4.8750
1.625 .968 3/4-16 FOR (4) 1/2
SHCS ON 3.75
B.C. EQ SPCD
FOR (4) 3/8-24
SHCS ON 3.625
B.C. EQ SPCD
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