SK COLLET CHUCKS
SK20 COLLETS SK20 COLLETS Size range: 3.5mm - 20.00mm (0.138 - 0.787")
METRIC Part Number
INCH/METRIC ON-SIZE Part Number Size SK20-1/8A 0.125" SK20-3/16A 0.188" SK20-1/4A 0.250" SK20-5/16A 0.312" SK20-3/8A 0.375" SK20-7/16A 0.438" SK20-1/2A 0.500" SK20-9/16A 0.563" SK20-5/8A 0.625" SK20-3/4A 0.750" SK20-4A 0.157" SK20-6A 0.236" SK20-8A 0.315" SK20-10A 0.390" SK20-12A 0.472" SK20-16A 0.630" SK20-20A 0.787" SK20-SET-10-A 1/8 - 3/4" SK20 Set These are on-size collets with minimal collapsible ranges. A-type collets have an H8 gripping range.
Collapse Range (mm)
Collapse Range (in) 0.157 - 0.138" 0.177 - 0.157" 0.197 - 0.177" 0.217 - 0.197" 0.236 - 0.217" 0.256 - 0.236" 0.276 - 0.256" 0.295 - 0.276" 0.315 - 0.295" 0.335 - 0.315" 0.354 - 0.335" 0.374 - 0.354" 0.394 - 0.374" 0.413 - 0.394" 0.433 - 0.413" 0.453 - 0.433" 0.472 - 0.453" 0.492 - 0.472" 0.512 - 0.492" 0.531 - 0.512" 0.551 - 0.531" 0.571 - 0.551" 0.591 - 0.571" 0.61 - 0.591" 0.63 - 0.61" 0.65 - 0.63" 0.669 - 0.65" 0.689 - 0.669" 0.709 - 0.689" 0.728 - 0.709" 0.748 - 0.728" 0.768 - 0.748" 0.787 - 0.768"
SK20-4 SK20-4.5 SK20-5 SK20-5.5 SK20-6 SK20-6.5 SK20-7 SK20-7.5 SK20-8 SK20-8.5 SK20-9 SK20-9.5 SK20-10 SK20-10.5 SK20-11 SK20-11.5 SK20-12 SK20-12.5 SK20-13 SK20-13.5 SK20-14 SK20-14.5 SK20-15 SK20-15.5 SK20-16 SK20-16.5 SK20-17 SK20-17.5 SK20-18 SK20-18.5 SK20-19 SK20-19.5 SK20-20
4 - 3.5 4.5 - 4 5 - 4.5 5.5 - 5 6 - 5.5 6.5 - 6 7 - 6.5 7.5 - 7 8 - 7.5 8.5 - 8 9 - 8.5 9.5 - 9
10 - 9.5 10.5 - 10 11 - 10.5 11.5 - 11 12 - 11.5 12.5 - 12 13 - 12.5 13.5 - 13 14 - 13.5 14.5 - 14 15 - 14.5 15.5 - 15 16 - 15.5 16.5 - 16 17 - 16.5 17.5 - 17 18 - 17.5 18.5 - 18 19 - 18.5 19.5 - 19 20 - 19.5
SK20-SET-21-MM SK20-SET-33-MM
9.5mm - 20mm SK20 Set 3.5mm - 20mm SK20 Set
AC-type collets are mechanically sealed, no coolant nuts or disks are required. AC-type collets have an H8 gripping range. METRIC - COOLANT-THRU Up to 1000 psi capable. Part Number Size SK20-12AC 12mm SK20-16AC 16mm SK20-18AC 18mm SK20-20AC 20mm
AC-type collets are mechanically sealed, no coolant nuts or disks are required. AC-type collets have an H8 gripping range. INCH - COOLANT-THRU Up to 1000 psi capable. Part Number Size SK20-7/16AC 0.438" SK20-1/2AC 0.500" SK20-9/16AC 0.563" SK20-5/8AC 0.625" SK20-3/4AC 0.750"
Note: SK Collet Drill Chart available on page 291 in the Technical section.
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847-367-4800
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