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BW-Fixators®

Series RK:

When you need to align and (re-)adjust your machine most exact, the series RK is the right choice.

BW-Fixators® of series RK are easy to operate and precise in adjustment. The time for the alignment of e.g. a lathe will be reduced significant. If the machines needs to be re-adjusted because of foundation shifting or shrinkage, it can be done simply and fast. With a wide range of accessory and anchoring methods the series RK covers nearly any application.

BW-Fixators® of series RK fulfil all requierments, conditions and properties appointed by the industry. All load-bearing and moveable parts including guiding surfaces are made from high-quality lamellar grey cast iron. To ensure the smooth handling of this parts over years, they are treated with molybdenum disulfide.

Baureihe RK: Technical Data | Anchoring | Accessory

Downloads

Installation Varieties and Technical Data:

Instruction for installation:

Machine alignment with BW-Fixators®:

Dimensions of series RK

GA Basic Unit

Size	L	B	H*	ØD	SW	d	c	z	h	l	b	e1	e2	k
I	175	105	55	60	19	16	21	13	5	92	90	14	26	12
II	178	120	75	75	19	15	31	15	5	96	100	14	26	13
III	220	150	95	90	24	22	40	17	6	118	130	18	32	22
IV	275	180	115	110	30	24	49	17	8	142	160	24	38	24
V	345	230	135	150	36	34	58	20	10	180	205	28	46	34
VI	420	270	165	200	46	34	67	32	13	230	245	28	46	31

*Height with machined bottom (Variant b)

Size	Øf1	Øf2	g
I	17	19	M12
II	21	25	M20
III	25	31	M24
IV	31	37	M30
V (M 36)	37	44	M36
V (M 42)	44	-	-
VI	58	-	M42

Technical Datas for Series RK

Size		Dim	RK I	RK II	RK III	RK IV	RK V	RK VI
Permissible maximum load ¹)		N	90.000	120.000	240.000	360.000	700.000	1.200.000
Recommended machine dead weight ²)		N	10.000	20.000	40.000	60.000	120.000	200.000
Spring constant in operation range ³)		N/µm	2.000	4.500	8.000	10.000	14.000	18.000
Torque at adjusting screw	Specific-	Nm / 10³ kg	3	3	4	4,5	5,5	7
	Maximum-	Nm	27	36	96	160	385	700
	Security-	Nm	2,5-5	2,5-5	3,5-7	4-8	5-10	20
Vertical Adjustment per screw turn		mm	0,25	0,25	0,29	0,35	0,43	0,5
Weight of basic unit		kg	4	5,5	11,5	21	42	70

1) BW-Fixators® are adjustable up to this load.
2) This is the standard factor for the determination of the BW-Fixator® size.
3) Found by applying a changing load equal to the recommended proportional machine load. The operating
range will be covered when the machine has beenlevelled and bound down with the anchor bolts.

Formula for calculating the Resilience of BW-Fixators® Serie RK

Note: The total of the forces a – e exerted must not exceed the permissible maximum load
a) Proportional machine load
b) Tensile force exerted by anchor bolt
c) Dynamic forces
d) Changing loads (moving machine parts or workpieces)
e) Forces counteracting moments

Determination of BW-Fixator® size
The proportinal machine load recommended is a function of the net weight of the machine devided by the number of support points (BW-Fixators®). For machinery with sizable variations in partial weight, it is the heaviest machine load that has to be devided by the number of bearing points and the resulting BW-Fixator® size has to be used everywhere under the machine.

Anchor bolts and studs

wes

Anchor bolt for direct connection of the machine to the foundation

						e		Foundations		Clamping force
RK	M	L	l	f	Ød	von	bis	D	T	max. N
I	M16	330	90	30	13	20	60	70	230	53.000
II	M20	400	100	40	16	20	90	80	270	81.000
III	M24	500	135	50	19	30	100	100	340	115.000
IV	M30	600	150	55	24	35	135	120	410	182.000
V	M36	800	180	65	29	40	150	150	570	265.000
V	M42	1.000	260	75	35	40	200	170	760	385.000
VI	More information on request.

we/2

Split anchor bolt for direct connection of the machine to the foundation

						short		e		long		e		Foundations		Clamping force
RK	M	L1	l1	Ød	SW	L	l	von	bis	L	l	von	bis	D	T	max. N
I	M16	190	39	13	10	130	55	20	55	155	60	60	80	80	150	53.000
II	M20	275	48	16	13	140	50	20	50	190	80	55	100	100	220	81.000
III	M24	360	63	19	17	165	60	30	60	225	90	65	120	120	290	115.000
IV	M30	450	85	24	19	190	70	35	70	255	110	75	135	150	360	182.000
V	M36	600	105	29	24	220	80	40	80	275	120	85	135	170	500	265.000
VI	More information on request.

Note: Specify dimension „e“ (thickness of machine leg) in your order

due

Resin anchor
(Capsule and stud)

					e		Hole		Clamping force
RK	M	L	SW	f	von	bis	ØD	T	max. N*
I	M16	300	10	35	20	60	18	125	15.000
II	M20	400	13	40	20	90	25	170	27.000
III	M24	450	17	50	20	70	28	210	37.000

*Concrete ≥ B 25

due/2

Split Resin anchor
(Capsule and split stud)

				short		e		long		e				Hole		Clamping force*
RK	M	Ød	SW	L	l	von	bis	L	l	von	bis	L1	n	ØD	T	max. N
I	M16	13	10	130	55	20	55	155	60	60	80	185	60	18	125	15.000
II	M20	16	13	140	50	20	50	190	80	55	100	240	70	25	170	27.000
III	M24	19	17	165	60	30	60	225	120	65	120	290	80	28	210	37.000

*Concrete ≥ B 25

Note: Specify dimension „e“ (thickness of machine leg) in your order

ste

Short or long stud bolt for attaching the machine to the BW-Fixator®

					short		e		long		e		Clamping force
RK	M	Ød	SW	f	L	l	von	bis	L	l	von	bis	max. N
I	M12	-	-	-	130	-	20	40	160	-	40	70	32.000
II	M20	16	13	40	175	55	20	55	205	55	50	85	81.000
III	M24	19	17	50	215	70	20	70	260	70	65	115	115.000
IV	M30	24	19	55	260	85	30	85	310	85	80	135	182.000
V	M36	29	24	65	315	105	40	105	360	105	100	150	265.000
VI	More information on request.

Note: Specify dimension „e“ (thickness of machine leg) in your order.

ste/2

Short or long split stud bolt for attaching the machine to the BW-Fixator®

				short		e		long		e				Clamping force
RK	M	Ød	SW	L	l	von	bis	L	l	von	bis	L1	M1	max. N
II	M16	13	10	130	55	20	60	155	60	65	85	55	M20	53.000
III	M20	16	13	140	50	20	50	190	80	55	100	70	M24	81.000
IV	M24	19	17	165	60	30	60	225	90	65	120	85	M30	115.000
V	M30	24	19	190	70	40	70	255	110	75	135	105	M36	182.000

Note: Specify dimension „e“ (thickness of machine leg) in your order.

c

Side anchor bolts for connecting BW-Fixator® to the foundation

					Foundations			Clamping force
RK	M	L	l	a	L1	B1	H1	max. N
I	M12	150	70	90	140	60	140	65.000
II	M12	150	70	100	160	60	140	65.000
III	M16	250	90	130	200	70	240	120.000
IV	M20	300	100	160	240	80	290	190.000
V	M24	350	135	205	305	100	350	275.000

Other applications

p

Spherical washer set for non-parallel bearing surfaces

RK	ØD	H	Ød	Øb
I (M12)	40	9	30	13
I (M16)	40	9	30	17
II	44	10	36	21
III	56	13	44	25
IV	68	16	56	31
V (M36)	78	20	68	37
V (M42)	100	26	90	44

r

Large spherical washer set for non-parallel bearing surfaces

RK	ØD	H	Ød	Øb
I	44	10	36	17
II	56	13	44	21
III	68	16	56	25
IV	80	16	56	31
V (M36)	100	20	68	37
V (M42)	125	26	90	44

z

Foam centering bushing for concentric location of anchor bolts in the machine foot holes

RK	Øf	ØD	H	Ød	h
I	16,2	32	13	22	4
II	20,2	40	14	28	4
III	24,2	44	18	32	5
IV	30,2	54	21	42	5
V (M36)	36,3	60	26	45	6
V (M42)	42,5	70	32	56	6

le

Extended set screw on BW-Fixator® arranged inwards of the machine side

				Minimum		Foundations
RK	a	c	SW	length l	Tube	L1	B1	H1
I	50	23	22	140	24x4	80	40	70
II	50	33	22	140	24x4	80	40	70
III	50	42	22	170	24x4	80	40	90
IV	50	51	32	200	38x5	100	50	100
V	50	60	32	250	38x5	100	50	110

led

Extended set screw on BW-Fixator® arranged inwards of the machine side
Fixing with Eye screw

				Minimum		led			led-l
RK	a	c	SW	length l	Tube	min	max	Umax	max	Umax	ØD	T
I	50	23	22	140	24x4	25	80	≤60	120	≤100	14	120
II	50	33	22	140	24x4	25	80	≤50	120	≤90	14	120
III	50	42	22	170	24x4	25	80	≤40	120	≤80	14	120
IV	50	51	32	200	38x5	40	120	≤70			14	120
V	50	60	32	250	38x5	40	120	≤60			14	120

les

Extended set screw on flush-mounted BW-Fixator® arranged inwards of the machine side

				Minimum			Foundations
RK	a	B	H	length l	A1	Z1	B1	H1	X1
I	61	81	47	140	130	20	160	70	230
II	65	92	59	140	140	25	200	80	240
III	72	92	59	180	160	30	250	100	270
IV	75	136	96	240	200	35	300	120	320
V	80	136	96	275	230	40	330	140	370

d

Lateral adjuster for adjusting machine location

										F
RK	M	L	SW	H	B	b	d	a	h	N
I	M12	50	17	83	86	70	25	40	15	20000
II	M16	60	19	106	102	86	30	43	16	25000
III	M16	60	19	129	129	109	35	55	16	35000
IV	M20	70	24	160	150	130	40	70	20	40000
V	M24	80	30	192	199	175	45	90	24	60000

dz

Offset lateral adjuster for adjusting machine location

										F
RK	M	L	SW	H	B	b	d	a	h	N
I	M12	50	17	83	102	86	25	57	15	20000
II	M16	60	19	106	118	102	30	65	16	25000
III	M16	60	19	129	149	129	35	80	16	35000
IV	M20	70	24	160	170	150	40	100	20	40000
V	M24	80	30	192	223	199	45	123	24	60000

m

Set screw guard on flush mounted BW-Fixator®
Foundations at combination of variants m and wes

					Fundament					*Ausführung 2
RK	L	B	H	Z	L1	H1	B1	D1	T1	D2	T2
I	129	81	47	20	310	70	160	70	230	-	-
II	138	92	59	25	310	80	200	80	270	100	360
III	160	92	59	30	380	100	250	100	340	120	430
IV	206	136	96	35	450	120	300	120	410	150	590
V	245	136	96	40	550	140	330	150	570	170	760

*Foundations 2 in connection with the next size of anchor bolts

mon

Locking system for the spherical bearing plate

frot

Connection for mobile arrangement

RK	M	l
I	6	8
II	6	8
III	8	8
IV	8	12
V	12	12

Size	L	B	H*	ØD	SW	d	c	z	h	l	b	e1	e2	k
I	175	105	55	60	19	16	21	13	5	92	90	14	26	12
II	178	120	75	75	19	15	31	15	5	96	100	14	26	13
III	220	150	95	90	24	22	40	17	6	118	130	18	32	22
IV	275	180	115	110	30	24	49	17	8	142	160	24	38	24
V	345	230	135	150	36	34	58	20	10	180	205	28	46	34
VI	420	270	165	200	46	34	67	32	13	230	245	28	46	31

					Fundament					*Ausführung 2
RK	L	B	H	Z	L1	H1	B1	D1	T1	D2	T2
I	129	81	47	20	310	70	160	70	230	-	-
II	138	92	59	25	310	80	200	80	270	100	360
III	160	92	59	30	380	100	250	100	340	120	430
IV	206	136	96	35	450	120	300	120	410	150	590
V	245	136	96	40	550	140	330	150	570	170	760

Size	L	B	H*	ØD	SW	d	c	z	h	l	b	e1	e2	k
I	175	105	55	60	19	16	21	13	5	92	90	14	26	12
II	178	120	75	75	19	15	31	15	5	96	100	14	26	13
III	220	150	95	90	24	22	40	17	6	118	130	18	32	22
IV	275	180	115	110	30	24	49	17	8	142	160	24	38	24
V	345	230	135	150	36	34	58	20	10	180	205	28	46	34
VI	420	270	165	200	46	34	67	32	13	230	245	28	46	31

					Fundament					*Ausführung 2
RK	L	B	H	Z	L1	H1	B1	D1	T1	D2	T2
I	129	81	47	20	310	70	160	70	230	-	-
II	138	92	59	25	310	80	200	80	270	100	360
III	160	92	59	30	380	100	250	100	340	120	430
IV	206	136	96	35	450	120	300	120	410	150	590
V	245	136	96	40	550	140	330	150	570	170	760

Size	L	B	H*	ØD	SW	d	c	z	h	l	b	e1	e2	k
I	175	105	55	60	19	16	21	13	5	92	90	14	26	12
II	178	120	75	75	19	15	31	15	5	96	100	14	26	13
III	220	150	95	90	24	22	40	17	6	118	130	18	32	22
IV	275	180	115	110	30	24	49	17	8	142	160	24	38	24
V	345	230	135	150	36	34	58	20	10	180	205	28	46	34
VI	420	270	165	200	46	34	67	32	13	230	245	28	46	31

					Fundament					*Ausführung 2
RK	L	B	H	Z	L1	H1	B1	D1	T1	D2	T2
I	129	81	47	20	310	70	160	70	230	-	-
II	138	92	59	25	310	80	200	80	270	100	360
III	160	92	59	30	380	100	250	100	340	120	430
IV	206	136	96	35	450	120	300	120	410	150	590
V	245	136	96	40	550	140	330	150	570	170	760