BOSCH REXROTH
R107262520

$261.51 USD

BOSCH REXROTH
Material:R107262520
Model:LSASE-A-25-DD

Quantity in stock: 0

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***Disclaimer: The following summary contains information gathered from various sources such as product descriptions, technical specifications and catalogs. While efforts have been made to provide accurate details, inaccuracies may occur. It is advised to verify all information by contacting Bosch Rexroth directly.***
The Bosch Rexroth LINEAR-SET LSASE-A-25-DD (R107262520) is a high-quality linear motion system designed for precision applications. This linear set features a lightweight aluminum housing with an integrated super linear bushing A, renowned for its self-aligning capabilities, which ensures smooth and accurate movement. The bushing is secured in place by a grooved taper pin and includes external seals for added protection against contaminants. Equipped with two seals, the LSASE-A-25-DD minimizes frictional drag when not under radial load, contributing to its efficiency in operation. Its dynamic load capacity is optimized for the main direction of loading, while the static load rating confirms its ability to withstand forces without movement. The system can handle maximum accelerations and operates effectively within a wide range of ambient temperatures. The outer diameter of the unit conforms to size H specifications, ensuring compatibility with various applications. Additionally, it boasts a notable breakaway force and can achieve maximum permissible linear speeds up to the limits specified by Bosch Rexroth's rigorous testing standards. This linear set is particularly suitable for applications requiring zero-clearance or preloaded guides. It comes pre-adjusted with an adjusting screw to fine-tune radial clearance as needed. Notably, this product has been tested extensively to guarantee longevity and reliability over significant travel distances without failure. Bosch Rexroth's commitment to precision engineering is evident in the LINEAR-SET LSASE-A-25-DD's design that caters to specific requirements such as reduced load capacity when loads are exerted counter to the direction of opening in open Linear Bushings setups. The product's weight also reflects its design focus on maintaining a balance between robustness and ease of handling during installation and operation.

Linear set (aluminum), SE-A-25, with two seals

Linear set (aluminum)
Side opening, adjustable
With super LB A
Shaft diameter d = 25
With two seals
Version: Standard

Unpacked Weight: 0.782 kg

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

Loads exerted counter to the direction of opening with open Linear Bushings usually result in a considerable reduction in load capacity. In order to prevent this and facilitate the installation of specific open Linear Bushings, the lightweight Linear Set with side opening has been developed.

Lightweight precision housing (aluminum)
super linear bushing A with self-alignment feature
Secured by grooved taper pin
External seals
Relubricatable

Data Sheet	Download Data Sheet
Manual	Download Manual
Manual	Download Manual
Manual	Download Manual
Manual	Download Manual
Manual	Download Manual

Size V	6.5
Series	Super A (with self-alignment feature)
Footnote friction force FR	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.
Size E1	28
Footnote dynamic load capacity C	The load capacities apply for the main direction of loading.
Size H	35
Max. acceleration amax	150
Permissible ambient temperature	-10 °C ... +80 °C
Outer diameter D	40
Size H3	38
Breakaway force	4.5
Size L3	29
Size H4	26
Maximum permissible linear speed vmax	3
Size D	40
Footnote static load capacity C0	The load capacities apply for the main direction of loading.
Size N1	50
Static load rating C0	2250
Size M	21
Note: Maximum permissible speed vmax	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.
Friction force	2
Size A	75
Radial clearance	Comes clamped to h5 shaft (lower limit) and set to zero-clearance
Productgroup ID	17
Size N2	18
Size W	11.5
Size E3	42
Permissible ambient temperature (max)	+80
Size E2	36
Size E4	52
Angle α	57
Size SW	3
Permissible ambient temperature (min)	-10
Size S	10.5
Shaft diameter d	25
Linear guide type	Linear bushing and shaft
Filter for linear bushings and shafts	Linear sets with linear bushings
Format of linear bushings	SE – With side opening, adjustable
Dynamic load capacity C	4130
Size L	67
Size S2	8
Weight	0.782
Size D1 with tolerance
Size H1	72

General technical data

Ø d	mm	20	25	30	40	50
amax	m/s²	150
vmax 1)	m/s	3
m	kg	0.42	0.8	1.2	2	3.2
FR 2)	N	1.5	2	2.5	3	4
Breakaway force	N	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	20	25	30	40	50
C 1)	N	2570	5040	5020	8620	12500
C0 1)	N	1180	2470	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

See the notes on installing Linear Sets with side opening.

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).

Reduced load capacity with short stroke

In case of short stroke, the service life of the shaft is less than that of the super Linear Bushing. The load ratings C specified in the tables must therefore be multiplied by the factor f.s .

technical illustration-R107262520-Linear set (aluminum), SE-A-25, with two seals

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

a)	Lubricating hole M8 x 1 sealed with plastic cap

Dimensions

Ød	mm	20	25	30	40	50
D	mm	32	40	47	62	75
α	°	55	57		56	54
A	mm	60	75	86	110	127
E1		22 mm ±0.15	28 mm ±0.15	34 mm ±0.15	43 mm ±0.15	50 mm ±0.15
E2		30 mm ±0.15	36 mm ±0.15	42 mm ±0.15	48 mm ±0.15	62 mm ±0.15
E3	mm	33	42	48	62	70
E4	mm	42	52	60	68	85
H	mm	30	35	40	45	50
Tolerance for H 1)	µm	+ 8 - 16
H1	mm	60	72	82	100	115
H3	mm	32	38	44	50	56
H4	mm	22	26	30	38	45
L	mm	54	67	79	91	113
L3	mm	23.5	29	34	40	48
M 1)		17 mm ±0.01	21 mm ±0.01	25 mm ±0.01	32 mm ±0.01	38 mm ±0.01
N1	mm	42	50	55	67	78
N2	mm	15	18	24	30
S 2)	mm	8.4	10.5	13.5	15.5	17.5
S1		M10	M12	M16	M20
S2 3)	mm	6	8	10	12
SW	mm	2.5	3		4	5
V	mm	5	6.5	8	10	12
W 4)	mm	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.

Life expectancy calculation

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.

Notes on installing Linear Sets with side opening

No reference edges:

Straighten the first shaft using the shaft support rail and fasten it in place. Align the second shaft parallel to the first and fasten it in place. Slide the Linear Sets onto the shaft and fasten them to the machine table.

With reference edges:

Press the first shaft with shaft support rail onto the reference edge and fasten the shaft support rail in place. Align the second shaft parallel to the first and fasten the shaft support rail in place. Slide the Linear Sets onto the shafts. Next: with one reference edge on the machine base and one on the machine table: Press the Linear Sets on the first shaft onto the reference edge of the machine table and fasten into place. Fasten the Linear Sets on the second shaft to the machine table. with just one reference edge on the machine base: Fasten Linear Sets to the machine table.

General mounting instructions

Lubrication