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Back Plates for Lathe Chucks

Bison Threaded Back Plates

Bison Threaded Back Plates
Semi-Finished from fine grained iron casting.
Must be finish-machined by end-user: no holes for mounting are drilled, no boss is turned, etc.
European quality.
Quantity Price Model Description A (Diameter) B C D Thread

$134.00 BP-PS01
Back Plate, BISON, Threaded Semi-Finished 5" (aprxOD) x 1"-10 5" 11/16" 13/16" 2 1/8" 1"-10

$100.00 BP-PS02
Back Plate, BISON, Threaded Semi-Finished 5" (aprxOD) x 1-1/2"-8 5" 11/16" 1/2" 2 5/8 1 1/2"-8

$139.00 BP-PS1
Back Plate, BISON, Threaded Semi-Finished 6.5" (aprxOD) x 1-1/2"-8 6 1/2" 3/4" 1/2" 3 3/16 1 1/2"-8

$185.00 BP-PS2
Back Plate, BISON, Threaded Semi-Finished 8" (aprxOD) x 1-1/2"-8 8" 13/16" 1/2" 3 1/2 1 1/2"-8

$269.00 BP-PS3
Back Plate, BISON, Threaded Semi-Finished 8" (aprxOD) x 2-1/4"-8 8" 13/16" 5/8" 3 1/2 2 1/4"-8

$565.00 BP-PS4
Back Plate, BISON, Threaded Semi-Finished 10" (aprxOD) x 2-1/4"-8 10" 1" 3/4" 4" 2 1/4"-8

$661.00 BP-PS45
Back Plate, BISON, Threaded Semi-Finished 10" (aprxOD) x 2-3/8"-6 10" 63/64" 1" 4.17" 2 3/8"-6

$734.00 BP-PS5
Back Plate, BISON, Threaded Semi-Finished 12.5" (aprxOD) x 2-3/8"-6 12 1/2" 1 1/8" 1 3/16" 6 1/2 2 3/8"-6

Unfinished Lathe Chuck Back Plates

Unfinished Cast-iron adapters (backplates) for lathe chucks.
Must be machined by end-user.
Measurements are approximate and can vary.
Quantity Price Model Description Diameter Hub Diameter Through-Hole Overall Thickness Flange Thickness

$110.00 BP-T106
Back Plate, BISON, Unfinished 6.25" (aprxOD) 6" 3.45" 1" 2.2" 1"

$161.50 BP-T108
Back Plate, BISON, Unfinished 8.25" (aprxOD) 8.25" 4" 1" 2.8" 1.2"

$299.00 BP-T110
Back Plate, BISON, Unfinished 10.25" (aprxOD) 10.25" 4.5" 1.55" 3.5" 1.25"

D-Camlock Bison Lathe Chuck Back Plates

Finished Back Plates for Bison universal lathe chucks.
For D-type camlock direct mounting spindles.
Please email us for semi-finished plates to use on other brands of lathe chuck, and back plates not listed here - many others are available.
Quantity Price Model Description Chuck Diam. Spindle

$273.00 BP-6-D13
Back Plate, BISON, Finished D-1-3, 6" 6" D-1-3

$273.00 BP-6-D14
Back Plate, BISON, Finished D-1-4, 6" 6" D-1-4

$273.00 BP-6-D15
Back Plate, BISON, Finished D-1-5, 6" 6" D-1-5

$322.00 BP-8-D13
Back Plate, BISON, Finished D-1-3, 8" 8" D-1-3

$303.00 BP-8-D14
Back Plate, BISON, Finished D-1-4, 8" 8" D-1-4

$303.00 BP-8-D15
Back Plate, BISON, Finished D-1-5, 8" 8" D-1-5

$286.20 BP-8-D16
Back Plate, BISON, Finished D-1-6, 8" 8" D-1-6

$385.00 BP-10-D15
Back Plate, BISON, Finished D-1-5, 10" 10" D-1-5

$385.00 BP-10-D16
Back Plate, BISON, Finished D-1-6, 10" 10" D-1-6

$385.00 BP-10-D18
Back Plate, BISON, Finished D-1-8, 10" 10" D-1-8

$515.00 BP-12-D18
Back Plate, BISON, Finished D-1-8, 12" 12" D-1-8

$515.00 BP-12-D111
Back Plate, BISON, Finished D-1-11, 12" 12" D-1-11

L-Taper Bison Lathe Chuck Back Plates

Bison L-Taper Finished Back Plates for mounting Bison Lathe Chucks.
"Fully-finished" style for easier mounting of Bison plain-back chucks, but some machining may still be required.
Please email us for semi-finished plates to use for mounting other brands of lathe chucks (or other back plates not listed here - many others are available.)

Quantity Price Model Description Chuck Diam. Spindle

$298.12 BP-6-L00
Back Plate, BISON, Finished L-00, 6" 6" L-00

$298.12 BP-6-L0
Back Plate, BISON, Finished L-0, 6" 6" L-0

$318.37 BP-8-L00
Back Plate, BISON, Finished L-00, 8" 8" L-00

$318.37 BP-8-L0
Back Plate, BISON, Finished L-0, 8" 8" L-0

$392.62 BP-8-L1
Back Plate, BISON, Finished L-1, 8" 8" L-1

$999.00 BP-10-L00
Back Plate, BISON, Finished L-00, 10" 10" L-00

$454.50 BP-10-L0
Back Plate, BISON, Finished L-0, 10" 10" L-0

$454.50 BP-10-L1
Back Plate, BISON, Finished L-1, 10" 10" L-1

$645.75 BP-10-L2
Back Plate, BISON, Finished L-2, 10" 10" L-2

$806.62 BP-12-L2
Back Plate, BISON, Finished L-2, 12" 12" L-2

D-Camlock Bison Set-Tru Lathe Chuck Back Plates

Finished Lathe Back Plates for Bison Set-Tru lathe chucks.
For D-type camlock direct mounting spindles.
The fine adjustment feature allowing .0006" repeatability is provided by 4 adjustment screws in the back plate.
Quantity Price Model Description Chuck Diam. Spindle

$391.50 TM7-875-063
Back Plate, BISON, Finished 'SET-TRU' D-1-3, 6" 6" D-1-3

$391.50 TM7-875-064
Back Plate, BISON, Finished 'SET-TRU' D-1-4, 6" 6" D-1-4

$391.50 TM7-875-065
Back Plate, BISON, Finished 'SET-TRU' D-1-5, 6" 6" D-1-5

$414.00 TM7-875-083
Back Plate, BISON, Finished 'SET-TRU' D-1-3, 8" 8" D-1-3

$414.00 TM7-875-084
Back Plate, BISON, Finished 'SET-TRU' D-1-4, 8" 8" D-1-4

$447.00 TM7-875-085
Back Plate, BISON, Finished 'SET-TRU' D-1-5, 8" 8" D-1-5

$447.00 TM7-875-086
Back Plate, BISON, Finished 'SET-TRU' D-1-6, 8" 8" D-1-6

$561.00 TM7-875-105
Back Plate, BISON, Finished 'SET-TRU' D-1-5, 10" 10" D-1-5

$561.00 TM7-875-106
Back Plate, BISON, Finished 'SET-TRU' D-1-6, 10" 10" D-1-6

$561.00 TM7-875-108
Back Plate, BISON, Finished 'SET-TRU' D-1-8, 10" 10" D-1-8

$698.00 TM7-875-126
Back Plate, BISON, Finished 'SET-TRU' D-1-6, 12" 12" D-1-6

$698.00 TM7-875-128
Back Plate, BISON, Finished 'SET-TRU' D-1-8, 12" 12" D-1-8