BOSCH REXROTH
R107162520
$236.71 USD
- BOSCH REXROTH
- Material:R107162520
- Model:LSAS-A-25-DD
Quantity in stock: 0
The Bosch Rexroth LINEAR-SET LSAS-A-25-DD (R107162520) is a high-quality linear motion component designed to provide smooth and precise linear movement in various applications. This linear set is comprised of an aluminum housing with a side opening, which facilitates easy installation and maintenance. It includes a super linear bushing A with a self-alignment feature, ensuring reliable guidance and extended service life even under misaligned conditions. The LSAS-A-25-DD features a lightweight precision housing made from aluminum, offering an excellent strength-to-weight ratio for applications where weight is a critical factor. The set comes with two external seals that protect the internal components from contaminants, enhancing durability and performance reliability. The seals also contribute to the unit's ability to handle dynamic load capacities effectively while maintaining low frictional drags, thanks to its integrated wiper seals on both sides. With a shaft diameter of 25 mm, this linear set is designed for standard applications requiring high accuracy and repeatability. It can withstand maximum accelerations and operate within an ambient temperature range of -20°C to +80°C without compromising its functionality. The outer diameter of the bushing ensures compatibility with corresponding components within the system. The LINEAR-SET LSAS-A-25-DD boasts impressive load capacities in the main direction of loading, ensuring it can handle significant forces from all directions without reducing its load capacity. Its design also prevents loads exerted counter to the direction of opening from causing considerable reductions in load capacity—a common issue with open linear bushings. This model is capable of achieving maximum permissible speeds up to 5 m/s, although it's important to note that at these speeds, the service life may be limited due to increased wear on plastic parts. Nevertheless, tests have demonstrated that this linear set can achieve total travel ranging from 100 km² to 1000 km² without failure. Overall, the Bosch Rexroth LINEAR-SET LSAS-A-25-DD (R107162520) represents an efficient solution for designers seeking a robust and reliable linear motion system component that ensures precision movement while absorbing forces effectively in various industrial applications.
Linear set (aluminum), S-A-25, with two seals
Linear set (aluminum)
Side opening
With super LB A
Shaft diameter d = 25
With two seals
Version: Standard
Unpacked Weight: 0.785 kg
For absorbing forces from all directions without reducing the load capacity.
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 |
| 2D CAD | Download 2D CAD |
| 2D CAD | Download 2D CAD |
| 3D CAD | Download 3D CAD |
| 3D CAD | Download 3D CAD |
| Manual | Download Manual |
| Manual | Download Manual |
| Manual | Download Manual |
| Manual | Download Manual |
| Manual | Download Manual |
| Size V | 6.5 |
| Footnote shaft radial clearance h6 | clamped (fastened) |
| 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 |
| Productgroup ID | 17 |
| Size N2 | 18 |
| Size W | 11.5 |
| Size E3 | 42 |
| Permissible ambient temperature (max) | |
| Size E2 | 36 |
| Size E4 | 52 |
| Angle α | 57 |
| Size SW | 3 |
| Permissible ambient temperature (min) | |
| 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 | S – With side opening |
| Dynamic load capacity C | 4130 |
| Size L | 67 |
| Size S2 | 8 |
| Weight | 0.785 |
| 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 |
|
Shaft radial clearance h6 3) |
µm |
+ 31 - 2 |
+ 35 - 3 |
|||
|
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. |
| 3) | Clamped (fastened). |
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 .
| 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. |
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
Wiper seals for open-type Super Linear Bushings and Standard Linear Bushings
Wiper seals for open-type Super Linear Bushings and Standard Linear Bushings
Galvanized metal case Elastomer wiper sealCatalog
Instructions
Service
CAD data
Grooved taper pin
Grooved taper pin
Catalog
Instructions
Service
Hydraulic-type lube nipple according to DIN 71412 Form A
Hydraulic-type lube nipple according to DIN 71412 Form A
Catalog
Instructions
Service
Funnel-type lube nipple according to DIN 3405 Form A
Funnel-type lube nipple according to DIN 3405 Form A
Catalog
Instructions
Service
Locating screws for super linear bushings A and B
Locating screws for super linear bushings A and B
Locating screws are self-locking.Catalog
Instructions
Service