K12 4 jaw self centering lathe chuck, 17 sizes from 80 to 630mm, through hole 16 to 280mm. Self-centering means all 4 jaws run off one scroll and close together, so round and square stock comes up on center without indicating — this is not a four-jaw independent chuck. Two sets of one-piece jaws ship with every chuck, internal and external. One-piece is the stiffer jaw; if you need to face soft top jaws instead, that is the two-piece K12A. Check the through hole first — that is what your bar has to clear. The mount is a short cylindrical register with 3 or 6 bolts, the usual metal lathe backplate pattern. Sizes, speeds and dimensions are in the chart below.
| Cart+ | SKU | Price | Quantity | Total | D (mm) | D1 (mm) | D2 (mm) | D3 (mm) | H (mm) | H1 (mm) | h (mm) | Z-d | Torque (Nm) | Speed (r/min) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
K12-80 | $72 | $0 | 80 | 55 | 66 | 16 | 66 | 50 | 3.5 | 3-M6 | 40 | 4000 | ||
K12-100 | $75 | $0 | 100 | 72 | 84 | 22 | 75 | 55 | 3.5 | 3-M8 | 60 | 3500 | ||
K12-125 | $85 | $0 | 125 | 95 | 108 | 30 | 84 | 58 | 4 | 3-M8 | 100 | 3000 | ||
K12-130 | $89 | $0 | 130 | 100 | 115 | 30 | 86 | 60.5 | 3.5 | 3-M8 | 100 | 3000 | ||
K12-160 | $119 | $0 | 160 | 130 | 142 | 40 | 95 | 65 | 5 | 3-M8 | 160 | 2500 | ||
K12-165 | $125 | $0 | 165 | 130 | 145 | 40 | 96.5 | 67.5 | 4.5 | 3-M8 | 160 | 2500 | ||
K12-190 | $155 | $0 | 190 | 155 | 172 | 54 | 115 | 75 | 5 | 3-M10 | 250 | 2000 | ||
K12-200 | $167 | $0 | 200 | 165 | 180 | 65 | 113 | 75 | 5 | 3-M10 | 250 | 2000 | ||
K12-240 | $208 | $0 | 240 | 195 | 215 | 70 | 124 | 80 | 8 | 3-M12 | 320 | 1600 | ||
K12-250 | $219 | $0 | 250 | 206 | 226 | 80 | 124 | 80 | 5 | 3-M12 | 320 | 1600 | ||
K12-315 | $429 | $0 | 315 | 260 | 285 | 100 | 141.5 | 90 | 6 | 3-M16 | 400 | 1200 | ||
K12-320 | $429 | $0 | 320 | 270 | 290 | 100 | 148.5 | 95 | 11 | 3-M16 | 400 | 1200 | ||
K12-325 | $447 | $0 | 325 | 272 | 296 | 100 | 149.5 | 97 | 12 | 3-M16 | 400 | 1200 | ||
K12-380 | $651 | $0 | 380 | 325 | 350 | 145 | 156 | 102.5 | 6 | 3-M16 | 500 | 1000 | ||
K12-400 | $634 | $0 | 400 | 340 | 368 | 145 | 155 | 101.5 | 6 | 3-M16 | 500 | 1000 | ||
K12-500 | $1,179 | $0 | 500 | 440 | 465 | 210 | 174 | 115.4 | 6 | 6-M16 | 630 | 800 | ||
K12-630 | $3,464 | $0 | 630 | 560 | 595 | 280 | 204 | 135 | 7 | 6-M16 | 630 | 600 |
17 sizes, 80 to 630mm outside diameter
Through hole 16mm at the 80 up to 280mm at the 630
Max speed 4,000 rpm at the 80, 600 rpm at the 630
Maximum input torque 40 to 630 Nm
Height 66 to 204mm
Two sets of one-piece jaws included, internal and external
Short cylindrical center mount, M6 to M16 bolts
Soft jaws and front through-bolt mounting made to order
