A-2 / D-1 Back Plate | B&B TechnoSolutions

A2 series chuck back plate, circular steel adapter with central bore and mounting holes.

D1 series camlock adapter plate with studs for lathe spindle mounting.

Back plates match chuck to spindle. A2 taper-nose and D1 camlock series cover the machines common in production turning. Chuck diameters are listed against each spindle size so the fit-up is specified, not guessed.

SeriesA-2 / D-1 Back Plate
Size rangeA2-4 to A2-11 and D1-4 to D1-11
ConfigurationAdapter plates
PricingBy quote. We’ll beat a competitor price on the same spec.

Material

Precision-machined steel adapter plates.

A2 series

Taper-nose spindle adapters.

D1 series

Camlock spindle adapters.

Fit

Chuck diameters listed per spindle size.

Features

A2-4 through A2-11.
D1-4 through D1-11.
Matched to listed chuck diameters.
Supplied as a complete mount with the chuck when specified.

Request a quote Dimensional PDF

A-2 type

Swipe sideways to see every column.

A-2 back plate dimensions in millimetres. Column A lists compatible chuck diameters.
Size	A (chuck Ø)	B	C	D	E max	F	G	H	J	K	K1
A2-4	160, 200, 250	33	108	63.52	61	82.6	14.7	6.5	12	13	10
A2-5	160, 200, 250	35	133	82.56	79	104.8	16.3	6.5	12	15	12
A2-6	200, 250, 315	40	165	106.37	103	133.4	19.45	6.5	14	16	13
A2-8	250, 315, 400	45	210	139.71	136	171.4	24.2	8	18	18	14
A2-11	315, 400, 600	45	280	196.86	193	235	29.4	10	20	20	16

D-1 type

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D-1 camlock back plate dimensions in millimetres.
Size	A (chuck Ø)	B	C	D	E max	F	G	H	H1
D1-4	160, 200, 250	33	112	63.52	61	82.6	M10 × 1.0	13	10
D1-5	160, 200, 250	35	135	82.56	79	104.8	M12 × 1.0	15	12
D1-6	200, 250, 315	40	170	106.37	103	133.4	M16 × 1.5	16	13
D1-8	250, 315, 400	45	220	139.71	136	177.4	M20 × 1.5	18	14
D1-11	315, 400, 600	50	290	196.86	193	235	M22 × 1.5	20	16

Taken from the series datasheet. Confirm spindle nose, bore, and jaws on the quote. The PDF drawing governs.

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