800.253.0820
3977 Emerald Dr., Kalamazoo, MI 49001
Ball Lock Power Chucks
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BL 6"–21" Chucks

  • This chuck is used for gripping castings and forgings. It pulls back workpieces with tapered surfaces of up to 10 degrees while providing a right and left compliance of 5 degrees resulting in strong clamping force
  • Available in self-centering version (add “CT” to end of part number “BL8-A5CT”)
  • Available as compensating chuck with center or plug (add “CP” to end of part number “BL8-A5CP”)
  • Also available in 2 jaw configuration (add “2” to end of part number “BL8-A5PT2”)
  • Available as adapter or direct mount

See complete product details in our latest catalog >>

Table Test

Model* No. Jaw Stroke Dia. Sleeve Stroke Gripping Capacity Draw Bar Pull lb/f Grip Force lb/f Max RPM Wt lbs
  Max Min  
BL6-A4.311".445"4.72".500"5,95017,850400040
BL6-A5.311".445"4.72".500"5,95017,850400040
BL6-A6.311".445"4.72".500"5,95017,850400040
BL8-A5.374".563"5.98".630"7,95023,800350060
BL8-A6.374".563"5.98".630"7,95023,800350060
BL10-A6 .500" .689" 7.99" 1.969" 9,900 29,750 3000 99
BL10-A8 .500" .689" 7.99" 1.969" 9,900 29,750 3000 99
BL12-A8.500".689"9.49"2.480"9,90035,7002500149
BL12-A11.500".689"9.49"2.480"9,90035,7002500149
BL15-A8 .622" .878" 12.48" 2.992" 15,000 45,000 2000 186
BL15-A11 .622" .878" 12.48" 2.992" 15,000 45,000 2000 186
BL18-A8.622".878"15.51"3.504"15,00045,0001500265
BL18-A11.622".878"15.51"3.504"15,00045,0001500265
BL21-A11 .622" .878" 18.50" 6.378" 15,000 45,000 1000 397

Table Test

Dimensional Data (in inch)
MODELBL6BL8BL10BL12BL15BL18BL21
A6.387.871011.81151821
B4.124.855.795.796.4336.4336.433
C0.760.9171.1461.461.2761.2761.276
F0.7990.991.1811.9882.9914.0915.591
H2.3312.7563.4093.4093.7833.7833.783
J Outer Dia.2.883.5024.4371.3076.758.259.75
J Inner Dia.0.8740.9981.19322.7484.2485.748
K max.0.4450.5630.6890.6890.8780.8780.878
K min0.2440.3540.3740.3740.4720.4720.472
LM16M16M18.M18M24M24M24
M0.1890.2360.2790.2760.2760.2760.394
N0.780.8461.0231.0231.4411.4411.441
O0.1730.1180.1570.1570.50.50.5
P1.1871.251.6251.6252.253.53.5
2 jaw dimensions same as 3 jaw