Constant Face Drivers CoA
slip-on driving discs
clamping diameter 8-80 mm

For rational turning of workpieces on their entire length without
reclamping with high precision. Developed according to the modular-
design principle, therefore a universal exchange of driving discs and
centres. Hydraulic respectively mechanic pressure compensation
provides a uniform clamping force also on uneven faces of workpieces.
The spring loaded centre provides a longitudinal workpiece stop on the
front side.

basic body type 680-50 / 680-55 with Morse taper
approx. value for an axially admitted total load of the
3 supporting pistons: 2000 daN
[Type 680-50]

basic body type 680-65
for clamping in lathe chuck with unstepped jaws
[Type 680-65]

basic body type 680-60
flange type with spring set hydraulic compensation
[Type 680-60]

type 688-87 adapter plates with short taper

short taper	5	6	8	11
A	140	165	216	280
B	30	35	40	45
K	82.563	106.390	139.735	196.885

basic body type 681-85 short taper mount DIN 55026
with spring set mechanical compensation
[Type 681-85]

short taper size	5	6	8
A	133	165	210
B	104.8	133.4	171.4
K	82.563	106.375	139.719
D	-	35	40
E	M10	M12	M16
F	15	18	23

One set consists of a basic body,
one driving disc and suitable centre

type 680-50 basic body
with Morse taper
(all basic bodies without centre)

taper MT	Part No.	weight approx.
3	088173	1.6 kg
4	088174	1.8 kg
5	088175	2.8 kg
6	088176	4.4 kg

type 680-55 basic body
with Morse taper,
with draw-off nut

taper MT	Part No.	weight approx.
3	088177	1.8 kg
4	088178	2.2 kg
5	088179	3.0 kg
6	088180	4.6 kg

type 680-65 basic body
for clamping in lathe chuck,
with spring set

taper MT	Part No.	weight approx.
	088074	2.3 kg

type 681-85 basic body
with short taper DIN 55026
mechanical compensation,
with spring set

short taper	Part No. DIN 55026	weight approx.
5	313905	6.5 kg
6	313906	7.0 kg
8	313907	8.1 kg

type 680-60 basic body
flange type with cylindrical
centre mount dia. 100,
with spring set

	Part No.	weight approx.
ZD 100	088046	7.3 kg

type 688-87 adapter plates
without spring set
(for CoA, type 680-60 and CoK)

short taper	Part No. DIN 55026	Part No. DIN 55027	Part No. DIN 55029	weight approx.
5	088485	088480	088495	4.5 kg
6	088486	088481	088496	5.8 kg
8	088487	088482	088497	10.7 kg
11	088488	088483	088498	22.0 kg

type 688-89 sleeve
with spring set,
suitable for adapter plates
(with CoB driving head only)

Part No.	weight approx.
086806	0.8 kg

type 680-72 mounting sleeve
for the clamping of a face driver
in lathe chuck

MT inside	Part No.	A	B	C	D	G	weight approx.
3	085033	31	39	32	40	23.825	0.15 kg
4	085034	39	47	42	50	31.267	0.25 kg
5	085035	54	62	52	60	44.399	0.48 kg
6	085036	75	83	62	70	63.448	1.05 kg

Röhm slide rule
to calculate axial
tailstock loading

Part No.	weight approx.
088230	0.035 kg

driving discs,
toothed

clamp- ing-Ø S	Part No. type680-10 right hand	Part No. type680-20 left hand	Part No. type680-30 right-left hand	app. turning range	B	C	D	weight approx.	matching centre ØA
8	088061	088081	088541	9-16	4.5	38	4	120 g	4
10	088062	088082	088542	11-20	4.5	38	4	120 g	4
12^*	088063	088083	088543	13-24	7	36	4	120 g	6
16^*	088064	088084	088544	17-32	11	33	4	120 g	10
20^*	088065	088085	-	21-40	13	30	4	120 g	12
25	088066	088086	-	26-50	17	30	8	150 g	16
32	088067	088087	-	33-64	22	30	10	190 g	16
^ driving discs with carbide toothing, on request*

driving discs,
with interchangeable
hard metal driving
plates 6 x 3.2

clamp- ing-Ø S	Part No. type680-11 right hand	Part No. type680-21 left hand	Part No. type680-31 right-left hand	app. turning range	B	C	D	weight approx.	matching centre ØA
20H	089065	089085	088545	21-40	7	30	5	125 g	6
25H	089066	089086	088546	26-50	11	30	8	140 g	10
32H	089067	089087	088547	33-64	17.5	30	10	200 g	16

driving discs,
with interchangeable
hard metal driving
plates 9.5 x 3.2 which
can be used on 4 sides

clamp- ing-Ø S	Part No. type680-12 right hand	Part No. type680-22 left hand	Part No. type680-32 right-left hand	app. turning range	B	C	D	weight approx.	matching centre ØA
40	088068	088088	088548	41-80	20	24	10	600 g	16
50	088069	088089	088549	51-100	28	24	-	240 g	16
63	088070	088090	088550	64-126	41	24	-	400 g	16
80	088071	088091	088551	81-160	58	24	-	600 g	16

type 680-40
centres

centre dia. A	Part No.	for clamping dia.	weight approx.
4	088351	8-10	110 g
6	088352	12	110 g
10	088353	16	110 g
12	088354	20	110 g
16	088355	25-80	120 g
16x110	086758	25-80	150 g

type 680-45
centres with head

Part No.	taper diameter A	taper diameter B	weight approx.
086619	21	10	136 g
086620	27	16	153 g
688878	34	23	190 g
086621	40	29	210 g
688880	48	37	250 g
086622	56	45	312 g

Spare Parts

Hard Metal
Driving Plates

size	Part No. for right or left-hand rotation	Part No. for right and left-hand rotation	for clamping dia.	weight approx.
6x3.2	088810	088970	20-32	2 g
9.5x3.2	088209	087931	40-80	4 g

Set Screw -
locking bolt

size	Part No. for right or left-hand rotation	Part No. for right and left-hand rotation	for clamping dia.	weight approx.
M4x6	234695		20	1 g
M5x8	048205		25+32	1 g
M5x8	088205		40-80	2 g

O-ring

size	Part No. for right or left-hand rotation	Part No. for right and left-hand rotation	for clamping dia.	weight approx.
21.8x3.53	006252

Spare Parts

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