Röhm DURO-T

Key bar chucks with quick jaw change system
DURO-T - with quick jaw
change system

APPLICATION
Optimized for turning applications, which require extremely high clamping forces, maximum concentricity, as well as reliable long-term repeatability.
In combination with a base plate, stationary use on milling machines, dividing units and machining centers.

TYPE
Key bar chuck with quick jaw change system.
Guaranteed maximum jaw precision as far as these are only used on the same chuck, and base and top jaws are kept screwed on for recurring work.

TECHNICAL FEATURES
- With jaw safeguard - Chuck body completely surface-hardened - Visual marking for quick jaw adjustment - External shape incl. splash-water edge	- Fastening options for strongly stressed sliding surfaces - Incl. safety key - High corrosion protection

CUSTOMER BENEFITS
» Maximum clamping force thanks to key bar system
» Concentricity and axial run-out tolerance twice as exact as required in DIN precision class 1
» Very high jaw change repeatability
» Balanced and jaws in chuck ground out for concentricity

A08
Cylindrical centre mount

Size	Inch	Through- hole mm	With one-piece reversible jaws	With base jaws	With base jaws and reversible top jaws	D mm	F mm	Speed max. min^-1	Max. Torque Nm	Max. total clamping force kN
125	5	32	437475	437482	-	46.5	100	6000	40	23
160	6 1/4	42	437476	437483	437490	63	125	5400	120	73
200	8	52	437477	437484	437491	81	160	4600	155	114
250	10	62	437478	437485	437492	92	200	4200	190	185
315	12 1/2	87	437479	437486	437493	111	250	3300	210	240
400	15 3/4	102	437480	437487	437494	118	315	2200	260	260
500	20	162	437481	437488	437495	118	400	1900	320	290
630	25	252	-	437489	437496	143	520	1100	350	320

At size 630 chuck body without convex outer contours
Further sizes and mountings available on request

A08
ISO 702-1 (DIN 55026), DIN 55021, ASA B 5.9, mounting from front

Size	Inch	Through- hole mm	With one-piece reversible jaws	With base jaws	With base jaws and reversible top jaws	D mm	F mm	Speed max. min^-1	Max. Torque Nm	Max. total clamping force kN
160	4	42	437570	437580	437591	76	82.62	5400	120	73
160	5	42	437571	437581	437592	79	104.8	5400	120	73
200	5	52	437572	437582	437593	93	104.8	4600	155	114
200	6	52	437573	437583	437594	97	133.4	4600	155	114
250	6	62	437574	437584	437595	108	133.4	4200	190	185
315	6	87	437575	437585	437596	124	133.4	3300	210	240
315	8	87	437576	437586	437597	130	171.4	3300	210	240
400	8	102	437577	437587	437598	135	171.4	2200	260	260
500	11	162	437578	437588	437599	138	235	1900	320	290
630	15	252	-	437590¹⁾	437601	167	330.2	1100	350	320

¹⁾ By conserving the precision
At size 630 chuck body without convex outer contours
Further sizes and mountings available on request

A08
ISO 702-3 (DIN 55027), with studs and locknuts

Size	Mount short taper	Through- hole mm	With one-piece reversible jaws	With base jaws	With base jaws and reversible top jaws	D mm	F mm	Speed max. min^-1	Max. Torque Nm	Max. total clamping force kN
125	5	32	437499	437523	-	67	104.8	6000	40	23
160	5	42	437501	437525	437548	78	104.8	5400	120	73
160	6	42	437502	437526	437549	85	133.4	5400	120	73
200	5	52	437504	437528	437551	96	104.8	4600	155	114
200	6	52	437505	437529	437552	97	133.4	4600	155	114
250	6	62	437509	437533	437556	108	133.4	4200	190	185
250	8	62	437510	437534	437557	110	171.4	4200	190	185
315	8	87	437512	437536	437559	129	171.4	3300	210	240
315	11	87	437513	437537	437560	131	235	3300	210	240
400	8	102	437515	437539	437562	138	171.4	2200	260	260
400	11	102	437516	437540	437563	138	235	2200	260	260
500	11	162	437519	437543	437566	156	235	1900	320	290
500	15	162	437520	437544	437567	163	330.2	1900	320	290
630	11	192	-	437545¹⁾	437568	165	235	1100	350	320
630	15	252	-	437546¹⁾	437569	167	330.2	1100	350	320

¹⁾ By conserving the precision
At size 630 chuck body without convex outer contours
Further mountings available on request

A08
ISO 702-2 (DIN 55029), stud for Camlock

Size	Mount short taper	Through- hole mm	With one-piece reversible jaws	With base jaws	With base jaws and reversible top jaws	D mm	F mm	Speed max. min^-1	Max. Torque Nm	Max. total clamping force kN
125	3	32	437602	437625	-	67	70.66	6000	40	23
125	4	32	437603	437626	-	68	82.6	6000	40	23
160	4	42	437604	437627	437650	83.5	82.6	5400	120	73
160	5	42	437605	437628	437651	87	104.8	5400	120	73
160	6	42	437606	437629	437652	104	133.4	5400	120	73
200	4	52	437607	437630	437653	97.5	82.6	4600	155	114
200	5	52	437608	437631	437654	101	104.8	4600	155	114
200	6	52	437609	437632	437655	106	133.4	4600	155	114
200	8	52	437610	437633	437656	125	171.4	4600	155	114
250	4	60	437611	437634	437657	118.5	82.6	4200	190	185
250	5	62	437612	437635	437658	112	104.8	4200	190	185
250	6	62	437613	437636	437659	117	133.4	4200	190	185
250	8	62	437614	437637	437660	120	171.4	4200	190	185
315	6	87	437615	437638	437661	145	133.4	3300	210	240
315	8	87	437616	437639	437662	136	171.4	3300	210	240
315	11	87	437617	437640	437663	143	235	3300	210	240
400	6	102	437618	437641	437664	153	133.4	2200	260	260
400	8	102	437619	437642	437665	141	171.4	2200	260	260
400	11	102	437620	437643	437666	148	235	2200	260	260
400	15	102	437621	437644	437667	168	330.2	2200	260	260
500	8	135	437622	437645	437668	143	171.4	1900	320	290
500	11	162	437623	437646	437669	148	235	1900	320	290
500	15	162	437624	437647	437670	153	330.2	1900	320	290
630	11	192	-	437648¹⁾	437671	170	235	1100	350	320
630	15	252	-	437649¹⁾	437672	175	330.2	1100	350	320

¹⁾ By conserving the precision
At size 630 chuck body without convex outer contours

Jaws DURO-T

A28
One-piece jaw EB, 3-jaw set, diagonally toothing, hardened

Item no.	Chuck Size	Number of jaws	Contents of delivery	Jaw length mm	Jaw height mm	Jaw width mm
212121	125	3	set	50	34	14
094000	160	3	set	77.7	45	20
094001	200	3	set	94.7	60	22
094002	250	3	set	114	70	26
094003	315	3	set	130	79	32
094043	400/500	3	set	167	93	45

Additionally or later applied, hardened stepped jaws must be ground out in the chuck.
For jaws which are applied later, send in the chuck.

A28
Unstepped jaw BL, 3-jaw set, diagonally toothing, unstepped, soft, material 16MnCr5

Item no.	Chuck Size	Number of jaws	Contents of delivery	Jaw length mm	Jaw height mm	Jaw width mm
304864	125	3	set	53	34	14
241699	160	3	set	84.4	45	20
249678	200	3	set	98.4	60	22
249679	250	3	set	118.7	70	26
249680	315	3	set	136.6	79	32
249681	400/500	3	set	173.6	93	45

A28
Reversible top jaw UB, 3-jaw set, hardened tongue and groove for external and internal clamping, material 16MnCr5

Item no.	Chuck Size	Number of jaws	Contents of delivery	Jaw length mm	Jaw height mm	Jaw width mm
094012	160	3	set	61.5	32.5	20.4
094013	200	3	set	70.5	38	24.4
094014	250	3	set	92	50	34.4
094015	315	3	set	107	56	35.7
094045	400/500	3	set	130	72	50.4
140715	630	3	set	185	102	68

Additionally or later applied hardened jaws must be ground out in the chuck.
For jaws which are applied later, send in the chuck.

A28
Unstepped top jaw AB, 3-jaw set, standard design, soft, material 16MnCr5

Item no.	Chuck Size	Number of jaws	Contents of delivery	Jaw length mm	Jaw height mm	Jaw width mm
212123	125	3	set	55	28.8	20.7
094008	160	3	set	85	36.5	20.3
094009	200	3	set	105	40	22
094010	250	3	set	125	50	30
094011	315	3	set	145	50	34.3
094046	400/500	3	set	180	73	50.5
140716	630	3	set	260	102	68

A28
Unstepped top jaw AB, 3-jaw set, extended design, soft, material 16MnCr5

Item no.	Chuck Size	Number of jaws	Contents of delivery	Jaw length mm	Jaw height mm	Jaw width mm
137055	160	3	set	85	42.5	24.4
137056	200	3	set	105	51	34.3
137057	250	3	set	125	75	50.5
137058	315	3	set	145	74	50.5

A28
Base jaw GB, 3-jaw set, diagonally toothing, with mounting bolts

Item no.	Chuck Size	Number of jaws	Contents of delivery	Jaw length mm	Jaw width mm
212119	125	3	set	47	14
094004	160	3	set	74	20
094005	200	3	set	90	22
094006	250	3	set	110	26
094007	315	3	set	125	32
094044	400/500	3	set	160	45
140194	630	3	set	230	65

C21
Reversible claw-type top jaws, standard design, tongue and groove, large clamping range, 1 piece, hardened

Item no.	Chuck Size	Jaw length mm	Jaw height mm	Jaw width mm
137060	160	66	37.5	24
137119	400/500	124	62	50
151289	630	144	78	70

C21
Reversible claw-type top jaws, standard design, tongue and groove, small clamping range, 1 piece, hardened

Item no.	Chuck Size	Jaw length mm	Jaw height mm	Jaw width mm
137061	160	66	37.5	20
137064	200	81	43	24
137108	250	90	55	34
137114	315	100	62	34
137120	400/500	124	62	50

C21
Reversible claw-type top jaws, standard design, tongue and groove, medium clamping range, 1 piece, hardened

Item no.	Chuck Size	Jaw length mm	Jaw height mm	Jaw width mm
137062	160	56	37.5	20
137065	200	66	43	24
137109	250	72	55	34
137115	315	86	62	34
137121	400/500	100	62	50

C21
Reversible claw-type top jaws, large design, tongue and groove, small clamping range, 1 piece, hardened

Item no.	Chuck Size	Jaw length mm	Jaw height mm	Jaw width mm
137066	160/200	79	43	34
137110	250	80	55	50
137116	315	93	62	50

C21
Reversible claw-type top jaws, large design, tongue and groove, large clamping range, 1 piece, hardened

Item no.	Chuck Size	Jaw length mm	Jaw height mm	Jaw width mm
137067	160/200	81	43	34
137111	250	90	55	50
137117	315	106	62	50

C21
Reversible claw-type top jaws, large design, tongue and groove, medium clamping range, 1 piece, hardened

Item no.	Chuck Size	Jaw length mm	Jaw height mm	Jaw width mm
137068	160/200	66	43	34
137112	250	72	55	50
137118	315	86	62	50

C21
Draw-down jaws, for interchangeable clamping inserts, diagonally toothing, 1 piece, without clamping inserts

Item no.	Chuck Size	Jaw length mm	Jaw height mm	Jaw width mm
141037	160	84.4	43.5	20
141039	200	98.4	47.5	22
141041	250	118.7	58.5	26
141043	315	136.4	63.9	32
141045	400/500	173.6	73.4	45

C21
Draw-down jaws, additional clamping range, for interchangeable clamping inserts, diagonally toothing, 1 piece, without clamping inserts

Item no.	Chuck Size	Jaw length mm	Jaw height mm	Jaw width mm
141038	160	84.4	43.5	20
141040	200	98.4	47.5	22
141042	250	118.7	58.5	26
141044	315	136.4	63.9	32
141046	400	173.6	73.4	45
141048	500	173.6	73.4	45

C15
Interchangeable clamping inserts, 1 piece, with claws

Item no.	Chuck Size
141049	160 / 200
141052	250 / 315
141055	400 / 500 / 630

C15
Interchangeable clamping inserts, 1 piece, with serrated toothing

Item no.	Chuck Size
141050	160 / 200
141053	250 / 315
141056	400 / 500

C15
Interchangeable clamping inserts, 1 piece, with heat treatable surface

Item no.	Chuck Size
141051	160 / 200
141054	250 / 315
141057	400 / 500

C15
Jaw mounting bolt, piece

Item no.	Size	Thread	Contents of delivery
243893	125	M 6 x 10	piece
200182	160 / 200	M 8 x 1 x 22	piece
200183	250	M 12 x 1.5 x 30	piece
202402	315	M 12 x 1.5 x 35	piece
227618	400 / 500	M 16 x 1.5 x 40	piece
249388	630	M 20 x 50	piece

Accessories DURO-T

A08
Base plate with fixing slots
Complete with mounting screws and fixed
T-slot nuts. Other sizes available on request.


	Item no.	Size
	143163	160
	143165	200
	143167	250

A08
Key


Item no.	Size	Square	L mm
212124	125	8	85
094016	160	10	140
094017	200	12	160
094018	250	14	220
094019	315	17	230
094047	500	19	250
332938	630	24	410
Only for stationary used chucks

A08
Safety key


Item no.	Size	Square	L mm
242172	125	8	85
242173	160	10	140
242174	200	12	160
242175	250	14	220
242176	315	17	230
242177	500	19	250
332939	630	24	410
Corresponding with DIN 1550 for rotating chucks

A08
Torque wrench


Item no.	Torque Nm	Length mm	Output	Working accuracy
10004116	20-120	435	12.7=1/2“	3%
10004117	60-320	659	12.7=1/2“	3%

A08
Chip guard set


Item no.	Size	Contents of delivery
212122	125	set
236439	160	set
236440	200	set
236441	250	set
236442	315	set
236443	500	set

A08
Safety adapter


Item no.	Size	Square	Length mm	Mount
1333585	125	8	85	1/2“
1333587	160	10	120	1/2“
1293349	200	12	132	1/2“
1129759	250	14	186	1/2“
1129449	315	17	192	1/2“
1111583	400/500	19	220	1/2“
1162787	630	24	250	1/2“

A08
Special grease F80 for lathe chucks for lubrication and conservation of chucking power


Item no.	Design	Contents
308555	Cartridge (DIN 1284) Ø 53.5 x 235mm	0.5 kg
028975	Tin	1 kg

C15
Grease gun DIN1283


Item no.	Connection	Contents of delivery
329093	M10x1	150 mm nozzle tube bent, needlepoint mouthpiece, top mouthpiece, 300 mm high pressure hose with 4 jaw hydraulics cross mouthpiece

We reserve the right to make technical changes.