LittleMachineShop.com carries a complete line of 3-jaw lathe chucks, 4-jaw lathe chucks, and lathe chuck backplate adapters for small lathes. Increase the capacity of your mini lathe by replacing the standard 3" lathe chuck with a 4" lathe chuck and adapter. With a lathe chuck adapter, a larger lathe chuck becomes a bolt-on accessory.
|
3146 Adapter, 3" Lathe Chuck
- For rotary tables with 20 mm registraion hole in center
3" Lathe chuck adapter.
This adapter lets you mount a 3" 3- or 4-jaw lathe chuck on a rotary table with a 2 Morse taper center hole. There is an alignment boss that projects into the tapered hole for quick alignment. It is clamped to the rotary table with T-slot nuts that are not included. |
|
1888 Adapter, 3" Lathe Chuck
- For rotary tables with 24 mm registraion hole in center
- This adapter is included with the 1810 rotary table and 2183 rotary table package
3" Lathe chuck adapter.
This adapter lets you mount a 3" 3- or 4-jaw lathe chuck on a rotary table with a 2 Morse taper center hole. There is an alignment boss that projects into the tapered hole for quick alignment. It is clamped to the rotary table with T-slot nuts that are not included.
You will need to machine the alignment boss to fit your rotary table. |
|
1692 Adapter, 4" Lathe Chuck
This adapter lets you mount 4" 3- or 4-jaw lathe chucks on your mini lathe.
Use this adapter with chucks that have a 72 mm registration recess diameter.
The adapter mounts to the 3-hole pattern on the spindle so it works on spindles with only three holes.
This adapter is cast iron and has a net thickness of 0.66". The net thickness is the distance from the rim of the lathe spindle to the back of the chuck. |
|
2426 Adapter, 4" Self-centering Lathe Chuck
This adapter lets you mount a 4" 4-jaw self-centering lathe chuck on your mini lathe.
Use this adapter with chucks that have a 70 mm registration recess diameter.
The adapter mounts to the 3-hole pattern on the spindle so it works on spindles with only three holes. |
|
3942 Adapter, 5" Lathe Chuck
5" Lathe chuck adapter.
This adapter lets you mount a 5" 3- or 4-jaw lathe chuck on LittleMachineShop.com PN 1787 6" rotary table. There is an alignment boss that projects into the tapered hole for quick alignment. It is clamped to the rotary table with T-slot nuts that are not included.
This is Phase II part number 221-356 |
|
2347 Adapter, 5" Lathe Chuck
5" Lathe chuck adapter.
This adapter lets you mount a 5" lathe chuck on your mini lathe in place of a 3" (80 mm) chuck.
The adapter mounts to the 3-hole pattern on the spindle so it works on spindles with only three holes.
This adapter has a 95 mm diameter registration boss and is drilled for both 3- and 4-jaw chucks on a 108 mm bolt circle. |
|
2961 Adapter, 5" Lathe Chuck
This adapter mounts a 5" 3- or 4-jaw lathe chuck with a 95 mm registration recess on a flange for a 4" chuck with a 72 mm registration boss. It works on 8x12 and 8x14 lathes as well as the Harbor Freight 5980 multipurpose machine. It also fits the SIEG C4 lathe. |
|
2330 Adapter, 5" Lathe Chuck
5" Lathe chuck adapter.
This adapter lets you mount a 5" 3- or 4-jaw lathe chuck on LittleMachineShop.com PN 2326 6" rotary table. It can be used on other 6" rotary tables with some modifications. There is an alignment boss that projects into the tapered hole for quick alignment. It is clamped to the rotary table with T-slot nuts that are not included.
The locating boss on this adapter fits a 30 mm hole, so if the hole in your rotary table is 30 mm or larger this adapter will work without modification. If the hole is smaller, you will need to turn down or remove the locating boss. |
|
2358 Adapter, 5" Lathe Chuck
This adapter lets you mount 5" 3-jaw lathe chucks on your mini lathe in place of a 3" (80 mm) chuck.
The adapter mounts to the 3-hole pattern on the spindle so it works on spindles with only three holes.
This adapter has a 92 mm diameter registration boss, and has 3 chuck mounting holes. |
|
3151 Adapter, 5" Lathe Chuck for Prazi
Flange to mount 125 mm chuck on 100 mm flange on Prazi lathes. |
|
1792 Chuck Adapter, 1 1/2"-8 Thread 4" Dia
- Cast iron lathe chuck backplate adapter fits lathes with 1 1/2"-8 spindle nose thread
- Adapter is 4" (100 mm) in diameter and has no chuck mounting holes
- For all 3" chucks and 4" 4-jaw chucks
- Includes instructions for final turning of the registration diameter to insure concentricity
See LittleMachineShop.com PN 1918 for a 4" diameter adapter pre-drilled for a 3-jaw chuck. |
|
1918 Chuck Adapter, 1 1/2"-8 Thread 4" Dia 3 Holes
- Cast iron lathe chuck backplate adapter fits lathes with 1 1/2"-8 spindle nose thread
- Adapter is 4" (100 mm) in diameter and has three chuck mounting holes for a 3-jaw chuck
- For 4" 3-jaw chucks
- Includes instructions for final turning of the registration diameter to insure concentricity
This adapter is for a 4" 3-Jaw chuck such as LittleMachineShop.com PN 1698. |
|
1919 Chuck Adapter, 1 1/2"-8 Thread 6" Dia
- Cast iron lathe chuck backplate adapter fits lathes with 1 1/2"-8 spindle nose thread
- Adapter is 6" (160 mm) in diameter and has no chuck mounting holes
- Adapter can be used for any 6", 5" or 4" lathe chuck
- Includes instructions for final turning of the registration diameter to insure concentricity
|
|
1917 Chuck Adapter, 1"-10 Thread 4" Dia 3 Holes
- Cast iron lathe chuck backplate adapter fits lathes with 1"-10 spindle nose thread
- Adapter is 4" (100 mm) in diameter and has three chuck mounting holes for a 3-jaw chuck
- For 4" 3-jaw chucks
- Includes instructions for final turning of the registration diameter to insure concentricity
This adapter is for a 4" 3-Jaw chuck such as LittleMachineShop.com PN 1698. |
|
1791 Chuck Adapter, 1"-10 Thread 4" Dia.
- Cast iron lathe chuck backplate adapter fits lathes with 1"-10 spindle nose thread
- Adapter is 4" (100 mm) in diameter and has no chuck mounting holes
- For all 3" chucks and 4" 4-jaw chucks
- Includes instructions for final turning of the registration diameter to insure concentricity
See LittleMachineShop.com PN 1917 for a 4" diameter adapter pre-drilled for a 3-jaw chuck. |
|
2333 Chuck Adapter, 1"-10 Thread 5" Dia.
Cast iron lathe chuck adapter fits a lathe with a 1"-10 spindle nose thread.
Instructions are included for final turning of the registration diameter on your lathe to insure perfect concentricity.
This adapter is 5" (125 mm) in diameter and has no chuck mounting holes. Use it for all 5" chucks. |
|
2334 Chuck Adapter, 1"-10 Thread 6" Dia.
Cast iron lathe chuck adapter fits a lathe with a 1"-10 spindle nose thread.
Instructions are included for final turning of the registration diameter on your lathe to insure perfect concentricity.
This adapter is 6" (160 mm) in diameter and has no chuck mounting holes. Use it for all 6" chucks. |
|
1916 Chuck Adapter, 1"-8 Thread 4" Dia 3 Holes
- Cast iron lathe chuck backplate adapter fits lathes with 1"-8 spindle nose thread
- Adapter is 4" (100 mm) in diameter and has three chuck mounting holes for a 3-jaw chuck
- For 4" 3-jaw chucks
- Includes instructions for final turning of the registration diameter to insure concentricity
This adapter is for a 4" 3-Jaw chuck such as LittleMachineShop.com PN 1698.
NOTE: PN 1790 is the same adapter just without the 3 holes pre-drilled. |
|
1790 Chuck Adapter, 1"-8 Thread 4" Dia.
- Cast iron lathe chuck backplate adapter fits lathes with 1"-8 spindle nose thread
- Adapter is 4" (100 mm) in diameter and has no chuck mounting holes
- For all 3" chucks and 4" 4-jaw chucks
- Includes instructions for final turning of the registration diameter to insure concentricity
See LittleMachineShop.com PN 1916 for a 4" diameter adapter pre-drilled for a 3-jaw chuck. |
|
2331 Chuck Adapter, 1"-8 Thread 5" Dia.
Cast iron lathe chuck adapter fits a lathe with a 1"-8 spindle nose thread.
Instructions are included for final turning of the registration diameter on your lathe to insure perfect concentricity.
This adapter is 5" (125 mm) in diameter and has no chuck mounting holes. Use it for all 5" chucks. |
|
2332 Chuck Adapter, 1"-8 Thread 6" Dia.
Cast iron lathe chuck adapter fits a lathe with a 1"-8 spindle nose thread.
Instructions are included for final turning of the registration diameter on your lathe to insure perfect concentricity.
This adapter is 6" (125 mm) in diameter and has no chuck mounting holes. Use it for all 6" chucks. |
|
2022 Chuck Adapter, 1/2"-20 Thread 3" Dia 3 Holes
- Cast iron lathe chuck backplate adapter fits lathes with 1/2"-20 spindle nose thread
- Adapter is 3" (80 mm) in diameter and has three chuck mounting holes for a 3-jaw chuck
- For 3" 3-jaw chucks
- Includes instructions for final turning of the registration diameter to insure concentricity
This adapter is for a 3" 3-Jaw chuck such as LittleMachineSHop.com PN 1187. |
|
1923 Chuck Adapter, 2 1/4" - 8 Thread 6" Dia
- Cast iron lathe chuck backplate adapter fits lathes with 2 1/4" - 8 spindle nose thread
- Adapter is 6" (160 mm) in diameter and has no chuck mounting holes
- For all 5" and 6" chucks
- Includes instructions for final turning of the registration diameter to insure concentricity
There are no holes in this adapter so you can drill it for either a 3-jaw or 4-jaw chuck. |
|
1920 Chuck Adapter, 3/4"-16 Thread 3" Dia 6 Holes
- Cast iron lathe chuck backplate adapter fits lathes with 3/4"-16 spindle nose thread
- Adapts 3" (80 mm) plain back chucks to Sherline and Taig spindles
- Six mounting holes allow mounting 3-jaw or 4-jaw chucks
- Includes instructions for final turning of the registration diameter to insure concentricity
With this adapter you can mount LittleMachineShop.com PN 1187 3" 3-Jaw chuck or PN 1175 3" 4-Jaw chuck on a Sherline or Taig lathe.
The spacer washer included is used on Taig spindles, but not on Sherline spindles. |
|
1921 Chuck Adapter, M39 x 4 Thread 4" Dia
- Cast iron lathe chuck backplate adapter fits lathes with M39 x 4 spindle nose thread
- Adapter is 4" (100 mm) in diameter and has no chuck mounting holes
- For all 3" chucks and 4" chucks
- Includes instructions for final turning of the registration diameter to insure concentricity
Many 9x20 lathes have this spindle nose.
Use this adapter to mount 4" chucks such as LittleMachineShop.com PN 1698 4" 3-Jaw chuck or PN 1588 4" 4-Jaw chuck.
There are no holes in this adapter so you can drill it for either a 3-jaw or 4-jaw chuck. |
|
1922 Chuck Adapter, M39 x 4 Thread 6" Dia
- Cast iron lathe chuck backplate adapter fits lathes with M39 x 4 spindle nose thread
- Adapter is 6" (160 mm) in diameter and has no chuck mounting holes
- For all 5" and 6" chucks
- Includes instructions for final turning of the registration diameter to insure concentricity
Many 9x20 lathes have this spindle nose.
There are no holes in this adapter so you can drill it for either a 3-jaw or 4-jaw chuck. |
|
2335 Chuck Adapter, Unthreaded 4" Dia.
Cast iron lathe chuck adapter can be threaded to fit any spindle nose thread. It has a 3/8" smooth pilot hole.
Instructions are included for final turning of the registration diameter on your lathe to insure perfect concentricity.
This adapter is 4" (100 mm) in diameter and has no chuck mounting holes. Use it for all 3" and 4" chucks. |
|
2336 Chuck Adapter, Unthreaded 6" Dia
Cast iron lathe chuck adapter can be threaded to fit any spindle nose thread. It has a 3/8" smooth pilot hole.
This adapter can be used for any 6", 5" or 4" lathe chuck.
This adapter is 6" (160 mm) in diameter and has no chuck mounting holes. Use it for all 5" and 6" chucks.
Instructions are included for final turning of the registration diameter on your lathe to insure perfect concentricity. |
|
2916 Lathe Chuck, 3-Jaw 2"
- 3-Jaw self-centering lathe chuck.
- 2" (50 mm) diameter
- Includes reversable jaws and two tommy bars
- M14x1 threaded mounting
- 15 mm registration bore
This 2 inch 3-Jaw self-centering lathe chuck fits Unimat 3 and Unimat 4 lathes. It includes reversable jaws and two tommy bars for adjustment.
This chuck has a M14x1 threaded through hole (approximately 13 mm) . It holds work up to 1.30" (33 mm) in diameter.
This chuck requires a 15 mm OD x 14 mm ID bushing to mount on a Unimat 3 or 4.
Fits the SIEG C0 lathe. |
|
1187 Lathe Chuck, 3-Jaw 3"
- 3-Jaw self-centering lathe chuck.
- 3" (80 mm) diameter
- Includes chuck key, inside and outside jaws
- Plain back mounting
This 3 inch 3-Jaw self-centering lathe chuck is the one that comes on the mini lathe. It includes a chuck key, inside and outside jaws, and mounting bolts.
This chuck has a 0.63" (16 mm) through hole. It holds work up to 2.48" (63 mm) in diameter.
The radial runout of a test bar held in this chuck, when the chuck is mounted true, is 0.003" maximum. |
|
1698 Lathe Chuck, 3-Jaw 4"
- 3-jaw self centering lathe chuck
- 4" (100 mm) diameter
- Includes chuck key, inside and outside jaws
- Plain back mounting
This 4 inch 3-Jaw self-centering lathe chuck includes a chuck key, inside and outside jaws, and mounting bolts.
This chuck has a 0.87" (22 mm) through hole. The chuck can hold work up to 3.15" (80 mm) in diameter.
The radial runout of a test bar held in this chuck, when the chuck is mounted true, is 0.003" maximum.
|
|
1941 Lathe Chuck, 3-Jaw 4" with Adapter
- 3-jaw self centering lathe chuck
- 4" (100 mm) diameter
- Includes chuck key, inside and outside jaws
- Includes an adapter to mount on a 3" (80 mm) flange
This chuck comes with an adapter for the mini lathe so that you can bolt it on.
This chuck has a 0.87" (22 mm) through hole. The chuck can hold work up to 3.15" (80 mm) in diameter.
The radial runout of a test bar held in this chuck, when the chuck is mounted true, is 0.003" maximum. |
|
2337 Lathe Chuck, 3-Jaw 5"
5" 3-Jaw self-centering lathe chuck.
Includes chuck key, inside and outside jaws, and mounting bolts.
The chuck can hold work up to 110 mm (4.33") in diameter.
The radial runout of a test bar held in this chuck, when the chuck is mounted true, is 0.003" maximum. |
|
2345 Lathe Chuck, 3-Jaw 5" with Adapter
5" 3-Jaw self-centering lathe chuck with adapter for the mini lathe.
Includes chuck key, inside and outside jaws, and mounting bolts.
The chuck can hold work up to 110 mm (4.33") in diameter.
This chuck comes with an adapter for the mini lathe so that you can bolt it on in place of a 3" (80 mm) chuck.
The radial runout of a test bar held in this chuck, when the chuck is mounted true, is 0.003" maximum. |
|
2028 Lathe Chuck, 3-Jaw 6"
- 3-jaw self centering lathe chuck
- 6" (160 mm) diameter
- Includes chuck key, inside and outside jaws
- Plain back mounting
This 6" 3-Jaw self-centering lathe chuck includes a chuck key, inside and outside jaws, and mounting bolts.
This chuck has a 1.57" (40 mm) through hole. The chuck can hold work up to 5.70" (145 mm) in diameter.
This is a plain back chuck and requires a backplate adapter to mount it.
The radial runout of a test bar held in this chuck, when the chuck is mounted true, is 0.003" maximum. |
|
2917 Lathe Chuck, 4-Jaw 2"
- 4-Jaw independent lathe chuck.
- 2" (50 mm) diameter
- Includes chuck key, inside and outside jaws
- M14x1 threaded mounting
This 2 inch 4-Jaw independent lathe chuck fits SIEG C0, Unimat 3 and Unitmat 4 lathes. It includes a chuck key, inside and outside jaws, and mounting bolts.
This chuck has a 0.00" (00 mm) through hole. It holds work up to 0.00" (00 mm) in diameter.
Fits the SIEG C0 lathe. |
|
1175 Lathe Chuck, 4-Jaw 3"
- 4-Jaw Lathe Chuck
- 3" (80 mm) diameter
- Each jaw is independently adjustable and reversible
- Plain back mounting
This set includes the 3 inch 4-jaw chuck, a chuck key, and reversible jaws.
This chuck has a 0.87" (22 mm) through hole. It holds work up to 3.15" (80 mm) in diameter. |
|
3424 Lathe Chuck, 4-Jaw 3" Self-Centering
- 4-jaw self-centering lathe chuck
- 3" (80 mm) diameter
- Plain back mounting
3 inch, 4-Jaw self-centering lathe chuck for square or octagonal work.
The through bore of this chuck is 16 mm (0.63").
The chuck can hold work up to 63 mm (2.48") in diameter.
The radial runout of a test bar held in this chuck, when the chuck is mounted true, is 0.003" maximum. |
|
1588 Lathe Chuck, 4-Jaw 4"
- 4-Jaw Lathe Chuck
- 4" (100 mm) diameter
- Each jaw is independently adjustable and reversible
- Plain back mounting
This 4 inch 4-jaw chuck requires an adapter for the mini lathe, but it fits the standard backplate for 9x20 lathes (with the addition of three more bolt holes).
It includes a chuck key, reversible jaws, and mounting bolts.
This chuck has a 0.98" (25 mm) through hole. The chuck can hold work up to 3.94" (100 mm) in diameter. |
|
2361 Lathe Chuck, 4-Jaw 4" Self-Centering
- 4-jaw self-centering lathe chuck
- 4" (100 mm) diameter
- Plain back mounting
4 inch, 4-Jaw self-centering lathe chuck for square or octagonal work.
The through bore of this chuck is 20 mm (0.79").
The chuck can hold work up to 80 mm (3.15") in diameter.
The radial runout of a test bar held in this chuck, when the chuck is mounted true, is 0.004" maximum. |
|
1697 Lathe Chuck, 4-Jaw 4" with Adapter
- 4-jaw lathe chuck
- 4" (100 mm) diameter
- Each jaw is independently adjustable and reversible
- Includes an adapter to mount on a 3" (80 mm) flange
This 4 inch 4-Jaw independent chuck includes an adapter to fit the mini lathe spindle. It includes a chuck key and reversible jaws.
The adapter mounts to the spindle with three studs so additional holes in the spindle are not required.
This chuck has a 0.98" (25 mm) through hole. The chuck can hold work up to 3.94" (100 mm) in diameter. |
|
2338 Lathe Chuck, 4-Jaw 5"
- 4-Jaw Lathe Chuck
- 5" (120 mm) diameter
- Each jaw is independently adjustable and reversible
- Plain back mounting
5 inch, 4-Jaw independent lathe chuck.
Each jaw is independently adjustable and reversible.
The through bore of this chuck is 30 mm (1.18").
The chuck can hold work up to 125 mm (4.92") in diameter. |
|
2346 Lathe Chuck, 4-Jaw 5" with Adapter
- 4-Jaw Lathe Chuck
- 5" (120 mm) diameter
- Each jaw is independently adjustable and reversible
- Plain back mounting
5 inch, 4-Jaw independent lathe chuck with adapter for the mini lathe.
Each jaw is independently adjustable and reversible.
The through bore of this chuck is 30 mm (1.18").
The chuck can hold work up to 125 mm (4.92") in diameter.
This chuck comes with an adapter for the mini lathe so that you can bolt it on in place of a 3" (80 mm) chuck. |
|
2038 Lathe Chuck, 4-Jaw 6"
- 4-jaw lathe chuck
- 6" (160 mm) diameter
- Each jaw is independently adjustable and reversible
- Plain back mounting
6 inch, 4-Jaw independent lathe chuck.
Each jaw is independently adjustable and reversible.
This chuck has a 1.77" (45 mm) through hole. The chuck can hold work up to 6.30" (160 mm) in diameter.
This is a plain back chuck and requires a backplate adapter to mount it. |
|
2276 Lathe Chuck, 6-Jaw 4"
- 6-jaw self centering lathe chuck
- 4" (100 mm) diameter
- Includes chuck key and mounting bolts
- Plain back mounting
- Excellent for holding thin walled workpieces
The jaws on this 4 inch 6-Jaw self-centering lathe chuck are hardened and ground.
Includes chuck key and mounting bolts.
Because the chuck is designed to hold tubing, outside jaws are not included.
This chuck has a 1.02" (26 mm) through hole. The chuck can hold work up to 3.15" (80 mm) in diameter.
The radial runout of a test bar held in this chuck, when the chuck is mounted true, is 0.003" maximum. |
