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Lathe Chuck 4 Jaw 400mm Scroll Chuck K12-400 Self Centering Metal Chuck for Heavy Duty Lathe

Product Description

K12 Series Four-Jaw Self-Centering Chuck Header Banner
K12 SERIES FOUR-JAW SELF-CENTERING CHUCK

FOUR JAW SELF CENTRING CHUCK is suitable for batch process of square, eight-square prism accessories and features a high-precision self-centering mechanism.

SPECIFICATIONS
K12 Series Four-Jaw Chuck Technical Drawing Dimensions
Size D D1 D2 D3 H H1 h Z-d
K1280 55 66 16 66 50 3.5 3-M6
K12100 72 84 22 74.5 55 3.5 3-M8
K12125 95 108 30 84 58 4 3-M8
K12130 100 115 30 86 60 3.5 3-M8
K12160 130 142 40 95 65 5 3-M8
K12160A 142 40 109 65 5 3-M8
K12165 130 145 40 96.5 66.5 4.5 3-M8
K12165A 145 40 110.5 66.5 4.5 3-M8
K12190 155 172 55 109 75 5 3-M10
K12190A 172 55 122 75 5 3-M10
K12200 165 180 65 109 75 5 3-M10
K12200A 65 122 75
K12250 206 226 80 120 80 5 3-M12
K12250A 226 80 136 80 5 3-M12
K12315 260 285 100 142.5 90 6 3-M16
K12315A 285 100 155.5 90 6 3-M16
K12320 270 290 100 142.5 90 6 3-M16
K12320A 290 100 155.5 90 6 3-M16
K12325 272 296 100 142.5 90 6 3-M16
K12325A 296 100 155.5 90 6 3-M16
K12380 325 350 130 155.5 100 6 3-M16
K12380A 350 130 171.5 100 6 3-M16
K12400 340 368 130 155.5 100 6 3-M16
K12400A 368 130 171.5 100 6 3-M16
K12500A 440 465 200 203 115 6 6-M16
K12630A 560 595 260 218 130 7 6-M16
K12800A 710 760 385 249 148 8 6-M20
K121000A 910 950 460 266 165 8 6-M24
K12 Series Chuck Measurement Specifications Inspection
K12 Series Chuck Back Side Mounting Pattern
K12 Series Chuck Jaws and Accessories Kit
K12 Series Chuck Complete Standard Package
Frequently Asked Questions
? What are K12 series four-jaw self-centering chucks primarily used for?
The K12 series is specifically designed and suited for the batch processing of square, rectangular, and octagonal (eight-square) prism accessories, providing efficient self-centering alignment during machining.
? Do all four jaws move simultaneously on the K12 series chuck?
Yes, the K12 is a self-centering chuck. All four jaws move together to securely center and clamp the workpiece, unlike independent four-jaw chucks where each jaw must be adjusted separately.
? How do I determine the appropriate K12 chuck size for my lathe?
Refer to our specifications table above. Key parameters such as outer diameter (Size D), registration diameter (D1), mounting hole circle diameter (D2), center thru-hole diameter (D3), and mounting thread type (Z-d) will guide you in matching the chuck to your machine spindle.
? What is the difference between standard and "A" model variations (e.g., K12160 vs K12160A)?
The "A" designation represents variations in specific dimensions, primarily the total height (H) and back mounting configurations, allowing for compatibility with different spindle mounts and spindle nose specifications.
? What mounting hardware is required for installation?
Each chuck has specific mounting thread configurations designated under the "Z-d" column in the specification table (e.g., 3-M8 or 6-M16), indicating the quantity and size of the mounting bolts needed to secure the chuck to your flange adapter plate.

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