8" 3 jaw Self Centering Scroll Lathe Chucks 2 Piece Jaws with 1-1/2x8 Fully Machined Threaded Back Plate
SKU
202-5434-202-6201
Online Price Only: $269.68 Regular Price: $376.60
In stock
Shipping UPS Ground
Details
| Mfg SKU # | 202-5434-202-6201 |
|---|---|
| Lathe Chuck Category | Self Centering Scroll Chucks |
| Brand | Shars Tool |
| back plate diameter | 8 |
| chuck diameter | 8 |
| Thru Hole Size | 2.559 |
| mounting | plain back |
| chuck thickness | 2.953 |
| TIR (inch) | 0.0039 |
| reversible jaw | yes |
| Number of Jaws | 3 |
| Maximum Torque Nm | 250 |
Spotlight
- Semi-steel chuck body made from high quality cast iron
- Three pinion design with each pinion ground and hardened to HRC 43
- Two piece jaw design with a master jaw and a top reversible jaw in American Standard tongue and groove specification
- Both side of jaw teeth and guides are ground and hardened to HRC 58-62
- Each set of jaws are serialized in their own set
- A serialized set of jaws are then finished, ground, and lapped on their designated chuck body which will be the same chuck body on the final assembly to achieve a greater accuracy
- Before assembling the jaw to its designated chuck body, the jaw's finish machining are performed on a closed tolerance state of the art CNC machine from Japan
- Scroll plate's thread flank are ground on both side to achieve a tighter contact with the master jaw
- Each chuck has gone through rigorous accuracy and repeatability inspection with clamping and jamming multiple random testing rods or rings
- Accuracy is maintained for the entire clamping range
- Internal Jaw:
- Clamping Range A-A1: 0.157-3.346"
- Jamming Range B-B1:2.559 -7.874"
- External Jaw
- Clamping Range C-C1: 2.559-7.874"
8" Fully Machined Threaded Back Plate
BACK PLATE DIMENSION
|
CHUCK SIZE |
THREAD T |
D1 | D2 | C | E | D | B | H |
NO OF BOLT HOLE |
| 8" | 1-1/2"-8 | 6.54" | 7.087" | 0.669" | 0.5" | 3.58" | 0.68" | 0.16" | 3 |
Fully machined back plate can be directly mounted onto our 6" 3 jaw or 4 jaw self centering lathe chuck (p/n 202-5433, 202-5411, 202-5473).
You would not need to drill any mounting holes but you will need to turn the shoulder down .050" to match the back of the lathe chuck to make the chuck & back plate more concentric with the lathe spindle. When turning the shoulder of the backing plate, ONLY TURN THE SHOULDER OF THE BACKING PLATE WHEN ATTACHED TO THE LATHE SPINDLE. If you use a chuck to clamp the backing plate and then turn it, the backing plate will not be true to the lathe spindle and will have more runout than specified when the chuck and back plate are put together.
- The back plate may come with two or three additional screws (depending on type) for removal the back plate from the chuck. They are not used to mount the chuck to the back plate, mounting screws should be included with the chuck
| Lathe | Lathe Chuck Diameter | ||||||
| Brand | Model | Swing | Spindle Thread | 3" | 4" | 5'' | 6'' |
| Atlas | 6" | 1/2"-20 | 202-6231 | ||||
| Atlas | 10100 | 6" | 1"-10 | ||||
| Atlas | TH42 | 10" | 1 1/2"-8 | 202-6230 | 202-6192 | ||
| Atlas | 5991 | 12" | 1 1/2"-8 | 202-6230 | 202-6108-3 | 202-6192 | 202-6119 |
| Atlas | 3986 | 12" | 1 1/2"-8 | 202-6230 | 202-6108-3 | 202-6192 | 202-6119 |
| Emco Maier | Maximat V10 | 5" | M39x4mm | 202-6214 | |||
| Grizzly | G8688 | 7" | 3" Flange | ||||
| Grizzly | G4000 | 9" | M39x4mm | 202-6214 | 202-6217 | ||
| Harbor Freight | 33684 | 7" | 3" Flange | ||||
| Harbor Freight | 45861 (BV20) | 9" | M39x4mm | 202-6214 | 202-6217 | ||
| Homier | 03911 | 7" | 3" Flange | ||||
| Jet | 920N | 9" | 1 1/2"-8 | 202-6230 | 202-6108-3 | 202-6192 | 202-6119 |
| King | CH-920 AG | 9" | M39x4mm | 202-6214 | 202-6217 | ||
| Logan | 9" | 1 1/2"-8 | 202-6230 | 202-6108-3 | 202-6192 | 202-6119 | |
| Logan | 10" | 1 1/2"-8 | 202-6230 | 202-6108-3 | 202-6192 | 202-6119 | |
| Logan | 11" | 2 1/4"-8 | 202-6234 | ||||
| Logan | 12" | 2 1/4"-8 | 202-6234 | 202-6120 | |||
| Logan | 6510/6560 | 14" | 2 1/4"-8 | 202-6234 | 202-6120 | ||
| Micro-Mark | 82710 | 7" | 3" Flange | ||||
| Micro-Mark | 82500 | 7" | 3" Flange | ||||
| Sears | 101.07301 | 6" | 1"-8 | ||||
| Sears | 101.2899 | 12" | 1 1/2"-8 | 202-6230 | 202-6108-3 | 202-6192 | 202-6119 |
| Sheldon | WM-46-P | 13" | 2 1/4"-8 | 202-6234 | 202-6120 | ||
| Sherline | All | 3.5" | 3/4"-16 | 202-6212 | |||
| Sidney Machine | Lot 160 | 14" | 2 1/4"-8 | 202-6234 | 202-6120 | ||
| South Bend | CL187ZB | 10" | 2 1/4"-8 | 202-6234 | |||
Lathe Chucks
- Diameter: 8"
- Back mounting: Plain back
- Center hole: 2.56"
- Thickness: 2.95"
- Bolt Circle Diameter: 7.087"
- Runout: 0.0039"
Back Plate
- Mounting Thread Size: 1-1/2 x 8 TPI
- Shoulder Diameter: 6.496"
- Bolt Circle Diameter: 7.087"
- Hub Length: 0.669''
- Hub Diameter: 3.583''
- Flange Thickness: 0.681''
- Shoulder boss: 0.157''
- No. of Bolt Holes: 3
What’s Included
- 1 pc of 8" 3 jaw Self Centering Scroll Lathe Chucks (p/n 202-5434)
- 1 pc of 8" Fully Machined Threaded Back Plate (p/n 202-6201)
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