K11A three jaw self centering lathe chuck in eight sizes from 160mm to 630mm, 160-800 Nm maximum input torque, 600-3600 rpm. The A is the jaw: a base jaw on the scroll plate carrying a bolt-on top jaw, reversible for internal or external gripping, to ISO 3442. That is also the answer to the oldest complaint about a three-jaw: order soft top jaws, bore or grind them in place on your own machine, and that is how you get a chuck running true on the part in front of you. Mounting is short cylindrical center with 3-M8 through 6-M16 screw patterns. Sizes, speeds and torques are in the chart below.
| Cart+ | SKU | Price | Quantity | Total | D (mm) | D1 (mm) | D2 (mm) | D3 (mm) | H (mm) | H1 (mm) | H2 (mm) | h (mm) | Z-d | Torque (Nm) | Speed (r/min) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
K11-160A | $100 | $0 | 160 | 130 | 142 | 45 | 109 | 65 | 71 | 5 | 3-M8 | 160 | 3600 | ||
K11-200A | $143 | $0 | 200 | 165 | 180 | 65 | 122 | 75 | 80 | 5 | 3-M10 | 320 | 3000 | ||
K11-250A | $193 | $0 | 250 | 206 | 226 | 80 | 136 | 80 | 86 | 5 | 3-M12 | 320 | 2400 | ||
K11-315A | $358 | $0 | 315 | 260 | 285 | 100 | 153 | 90 | 95 | 6 | 3-M16 | 400 | 1800 | ||
K11-325A | $375 | $0 | 325 | 272 | 296 | 100 | 160.5 | 97 | 102.5 | 12 | 3-M16 | 400 | 1800 | ||
K11-380A | $519 | $0 | 380 | 325 | 350 | 145 | 171.5 | 102.5 | 107.5 | 6 | 3-M16 | 500 | 1200 | ||
K11-500A | $888 | $0 | 500 | 440 | 465 | 210 | 202 | 115 | 126 | 6 | 6-M16 | 630 | 850 | ||
K11-630A | $2,727 | $0 | 630 | 560 | 595 | 280 | 218 | 135 | 142 | 7 | 3-M16 | 800 | 600 |
Eight sizes from 160mm to 630mm
Maximum input torque 160 to 800 Nm
Maximum speed 3600 rpm down to 600 rpm
Two-piece jaws to ISO 3442: base jaw plus top jaw
Reversible jaws — top jaws flip for internal or external gripping
Soft jaws on request, for boring or grinding to the part
Scroll plate drives all three jaws together
Short cylindrical center mounting
Mounting screws 3-M8 to 6-M16
