Linear Sets with Super Linear Bushings A, open-type, adjustable, R1038 LSAOE-A-..-DD

Артикул: RX8452

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Linear Sets with Super Linear Bushings A, open-type, adjustable, R1038 LSAOE-A-..-DD

Name: Linear Sets with Super Linear Bushings A, open-type, adjustable, R1038 LSAOE-A-..-DD
Brand: Bosch Rexroth
SKU: RX8452

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Description

Lightweight precision housing (aluminum)
Super Linear Bushing A with self-alignment feature
Secured by grooved taper pin
External seals
Relubricatable

Product description

For zero-clearance or preloaded guides. Adjusting screw for adjusting radial clearance. These Linear Sets come set to zero clearance.

Technical data

General technical data

Ø d	mm	12	16	20	25	30	40	50
amax	m/s²	150
vmax 1)	m/s	3
m	kg	0.11	0.17	0.3	0.57	0.86	1.6	2.6
FR 2)	N	0.8	1	1.5	2	2.5	3	4
Breakaway force	N	1.5	2	3	4.5	6	8	10
Radial clearance		Comes clamped to h5 shaft (lower limit) and set to zero clearance
Operating conditions
Permissible ambient temperature (min ... max)		-10 °C ... +80 °C

1)	Speeds of up to 5 m/s possible. Service life is limited by heightened wear to plastic parts. Tests have shown total travel from 50 • 105 m to 100 • 105 m without failure.
2)	Frictional drags generated by Linear Bushings with integrated wiper seals on two sides when not under radial load. The frictional drags depend on speed and lubrication.

Load capacities and load moments

Ød	mm	12	16	20	25	30	40	50
C 1)	N	1060	1500	2570	4130	5020	8620	12500
C0 1)	N	510	830	1180	2250	2880	4480	6620

1)	The load ratings apply for the main direction of loading.
	The load ratings are based on a total travel of 100, 00 m. When based on 50 000 m, the values in the table need to be multiplied by 1.26.

Legend

Symbol	Description	Unit
Ød	Shaft diameters	mm
amax	Maximum acceleration travel	m/s2
C	Dynamic load capacity	N
C0	Static load capacity	N
FR	Friction force	N
m	Mass	kg
vmax	Maximum permissible speed	m/s

For load in the direction of opening, please refer to the loading diagrams (see "Diagrams" section).

Impact of load direction on load rating of open Linear Bushings

The load ratings C and C0 apply for the main direction of loading ρ = 0°. For all other load directions, the load ratings must be multiplied by the factors fρ (dynamic load rating C) or fρ0 (static load rating C0).

Installing specific Linear Bushings can prevent reductions in load capacity (see Linear Set with side opening).

1)	fs = factor
2)	s = movement path

Reduced load capacity with high load

If the load F on a Super Linear Bushing A is more than F > 0.5 x C, the dynamic load rating C decreases.

Definition of dynamic load ratings

Self-alignment feature

The self-alignment feature in the steel bearing plates and machined ball guide grooves ensure quieter travel. The flow chart shows a comparison with a conventional Linear Bushing. The example is based on a load of 800 N and misalignment of about 8 ft (caused by shaft deflection).

Due to the self-alignment feature, two super Linear Bushings must be used on at least one of the shafts in the guide.

	FR = Frictional drag
	s = travel distance
	v = travel speed

a)	Super Linear Bushing, A Ød 20
b)	Conventional Linear Bushing, Ød 20

Diagrams/characteristic curves

Dimensions

a)	Lubricating hole sealed with plastic cap

Dimensions

Ød	mm	12	16	20	25	30	40	50
D	mm	22	26	32	40	47	62	75
α	°	66	68	55	57		56	54
A	mm	43	53	60	78	87	108	132
E1		32 mm ±0.15	40 mm ±0.15	45 mm ±0.15	60 mm ±0.15	68 mm ±0.15	86 mm ±0.15	108 mm ±0.2
E2		23 mm ±0.15	26 mm ±0.15	32 mm ±0.15	40 mm ±0.15	45 mm ±0.15	58 mm ±0.15	50 mm ±0.2
E3	mm	34	42	50	64	72	90	108
E4	mm	32	35	45	20	30	35	42
H	mm	18	22	25	30	35	45	50
Tolerance for H 1)	µm	+ 8 - 16
H1	mm	28	35	42	51	60	77	88
H3	mm	10				11.5	14	12.5
H4	mm	1.5	2.5	3.5	4	6
L	mm	39	43	54	67	79	91	113
L3	mm	10.5	11.5	13.5	15	16	18	22
M 1)		21.5 mm ±0.01	26.5 mm ±0.01	30 mm ±0.01	39 mm ±0.01	43.5 mm ±0.01	54 mm ±0.01	66 mm ±0.01
N1	mm	16.5	21	24	29	34	44	49
N2	mm	11	13	18	22		26	34
S 2)	mm	4.3	5.3	6.6	8.4		10.5	13.5
S1		M5	M6	M8	M10		M12	M16
S2 3)	mm	4		5	6		8	10
SW	mm	2.5			3		4	5
V	mm	5			6.5	8	10	12
W 4)	mm	6.5	9		11.5	14	19.5	22.5

1)	Clamped (fastened) in relation to Ø d.
2)	Fixing screws ISO 4762-8.8
3)	Pin hole centering.
4)	Minimum size in relation to Ø d.

Project planning information

Life expectancy calculation

Mounting

Radial clearance

The radial clearance values shown in the table have been determined from statistics and correspond to values expected in practice. The adjustable Linear Sets come clamped to an h5 shaft (lower limit) and set to zero clearance.

Vertical dimension

The tolerance values for the vertical dimension "H" for the Linear Sets shown in the table have been determined from statistics and correspond to values expected in practice.

Bolts

We recommend bolts in accordance with ISO 4762-8.8 for fastening the Linear Sets.

Lubrication

On-shaft relubrication on relubricatable Linear Bushing only until lubricant seeps out.

General mounting instructions

Maintenance

Lubrication

Certification

load error

Safety Instructions

load error

Downloads

	Linear Bushings and Shafts Manual \| R320103669 \| 2005-07-01 \| English, French, German, Italian \| PDF \| 3.6MB Product Groups: Linear Bushings and Shafts
	Linear Bushings Catalog \| R999000488 \| 2015-02-01 \| English \| PDF \| 14.9MB Product Groups: Linear Bushings and Shafts

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