BOSCH REXROTH
R073022540
$306.31 USD
- BOSCH REXROTH
- Material:R073022540
- Model:KBSH-25-DD
Quantity in stock: 0
The Bosch Rexroth SUPER LINEAR BUSH (R073022540) is a high-precision linear bushing designed to facilitate the movement of heavy loads with maximum accuracy and rigidity. This closed-type linear bushing, belonging to the Super SH series, is equipped with two seals for enhanced protection against contaminants. It features hardened steel load-bearing plates with precisely machined ball guide grooves, as well as a steel load-bearing plate back, ensuring superior precision and performance. The SUPER LINEAR BUSH is capable of compensating for shaft deflection and misalignment, maintaining high travel speeds. It boasts an impressive dynamic load rating due to its multiple running tracks, which contribute to its ability to handle high dynamic loads and offer increased rigidity. The POM ball retainer within the bushing holds balls made of rolling bearing steel that are secured by two metal holding rings. This model has been engineered for low friction operation; it includes optional integrated double-lipped wiper seals that help maintain lubrication and minimize contamination ingress. The linear bushing can operate within a wide temperature range from -20°C up to 80°C while maintaining its properties and performance. With an outer diameter of 40 mm, the SUPER LINEAR BUSH offers a static load rating C0 of 1570 N and a dynamic load capacity C of 2160 N. The breakaway force required to initiate movement is minimal, ensuring smooth operation under various conditions. Its design allows for maximum acceleration without compromising on stability or longevity. Overall, the Bosch Rexroth SUPER LINEAR BUSH (R073022540) represents a reliable solution for applications requiring precise linear motion control under heavy loads, making it suitable for advanced industrial applications that demand both durability and precision.
Super LB SH, closed, 25, with two seals
Super linear bushing
Super SH
Closed
Shaft diameter d = 25
With two seals
Unpacked Weight: 0.19 kg
| High-precision linear bushing for moving heavy loads |
| Hardened steel load-bearing plates with machined ball guide grooves and machined steel load-bearing plate back for maximum precision |
| Super H with even more running tracks for maximum dynamic load rating and rigidity |
| Compensates for shaft deflection and misalignment up to 30' |
| High travel speed (5 m/s) |
| Optional integrated, double-lipped wiper seals |
| POM ball retainer |
| Balls made of rolling bearing steel |
| Two metal holding rings |
| 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 |
| Rows of balls | 10 |
| Series | Super SH |
| Footnote friction force FR | One wiper seal: Multiply value with factor 0.5 |
| Size C1 H13 | 43.7 |
| Footnote dynamic load capacity C | The load capacities apply for the main direction of loading. |
| Max. acceleration amax | 150 |
| Footnote friction coefficient μ | Friction coefficients of unsealed linear bushings when lubricated with oil. The friction coefficient is lowest under heavy load, but can still be above the specified value even under a low load. |
| Permissible ambient temperature | -20 °C ... +80 °C |
| Outer diameter D | 40 |
| Breakaway force | 7 |
| Maximum permissible linear speed vmax | 5 |
| Size D | 40 |
| Size D1 | 38.5 |
| Friction coefficient μ | 0,001 ... 0,004 |
| Footnote static load capacity C0 | The load capacities apply for the main direction of loading. |
| Static load rating C0 | 4530 |
| Size C h13 | 58 |
| Size C2 | 1.85 |
| Friction coefficient μ max. | 0.004 |
| Friction force | 3 |
| Friction coefficient μ min. | 0.001 |
| Productgroup ID | 17 |
| Permissible ambient temperature (max) | |
| Permissible ambient temperature (min) | |
| Friction force FR footnote 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. |
| Footnote breakaway force | One wiper seal: Multiply value with factor 0.5 |
| Size S3 | 3.5 |
| Shaft diameter d | 25 |
| Linear guide type | Linear bushing and shaft |
| Filter for linear bushings and shafts | Linear bushings |
| Format of linear bushings | – Closed |
| Dynamic load capacity C | 6190 |
| Weight | 0.19 |
| Size D1 with tolerance | 38.5 mm |
| Radial clearance shaft h6/bore K7 | |
| Radial clearance shaft/bore h6/H7 | |
| Radial clearance shaft h6/bore M7 |
General technical data
|
Ø d |
mm |
20 | 25 | 30 | 40 | 50 |
|
amax |
m/s² |
150 | ||||
|
vmax |
m/s |
5 | ||||
|
m |
kg |
0.009 | 0.19 | 0.3 | 0.6 | 1.05 |
|
FR 1) 2) |
N |
2.5 | 3 | 4 | 5 | 6 |
|
Breakaway force 1) |
N |
5 | 7 | 9 | 12 | 15 |
|
μ 3) |
0.001 ... 0.004 | |||||
|
Rows of balls |
10 | 12 | ||||
|
Shaft radial clearance h6/bore H7 |
µm |
+ 43 + 11 |
+ 50 + 12 |
|||
|
Shaft radial clearance h6/bore K7 |
µm |
+ 25 - 7 |
+ 29 - 7 |
|||
|
Shaft radial clearance h6/bore M7 |
µm |
+ 18 - 14 |
+ 20 - 18 |
|||
|
Operating conditions |
||||||
|
Permissible ambient temperature (min ... max) |
-20 °C ... +80 °C | |||||
| 1) | One wiper seal: Multiply by a factor of 0.5. |
| 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) | Friction coefficients of unsealed Linear Bushings when lubricated with oil. The friction coefficient is lowest under heavy load, but can still be above the specified value even under a low load. |
Load capacities and load moments
|
Ød |
mm |
20 | 25 | 30 | 40 | 50 |
|
C 1) |
N |
3530 | 6190 | 6300 | 13500 | 22300 |
|
C0 1) |
N |
2530 | 4530 | 7180 | 10400 | 16800 |
| 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 |
|
μ |
Friction coefficient |
See "Technical data – Load direction factors" and the diagrams/characteristic curves section for exact values for the 4 main directions of loading.
Effect of load direction on load rating
| a) | Closed |
| b) | Open |
Main direction of loading
Load direction factors
The load ratings C and C0 apply for the load direction ρ = 0°. For all other load directions, the load ratings must be multiplied by the factors fr (dynamic load rating C) or fρ0 (static load rating C0).
Load direction factor Super SH
|
Shaft |
Load direction factor (dynamic load capacity) |
|||||
|
Ø d (mm) |
⇩ |
⇒⇐ |
⇑ |
⇩ |
⇒⇐ |
⇑ |
|
20 - 25 |
1 |
0,79 |
1 |
1 |
0,79 |
0,52 |
|
30 - 60 |
1 |
0,86 |
1 |
1 |
0,86 |
0,59 |
|
Load direction factor (static load capacity) |
||||||
|
20 - 25 |
1 |
0,68 |
1 |
1 |
0,68 |
0,50 |
|
30 - 60 |
1 |
0,83 |
1 |
1 |
0,83 |
0,55 |
|
|
|||||
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
The load rating is reduced under high load F. The dynamic load rating must be multiplied by the load factor f.F .
| 1) | fF = load factor |
Definition of dynamic load ratings
Installation dimensions/interchangeability
Super Linear Bushings H and SH have the same installation dimensions as Super Linear Bushings A and B as well as the standard Linear Bushings, but differ in terms of securing, radial clearance, load ratings and lubrication.
Sealing
Double protection through two-sided wiper seals:
Outer sealing lip prevents dirt from entering Inner sealing lip prevents lubricant from escaping
The wiper seals float inside closed Linear Bushings. This makes them perfect for any operating state. The open Linear Bushings are fully sealed with additional side seals along the shaft. All seals can be replaced.
With the closed super Linear Bushing H, the main direction of loading ρ = 0° (maximum load rating) is designated by a recess in the plastic cage (see enlargement).
Load direction factors
| a) | Closed |
| b) | Open |
Super Linear Bushings can be installed in any location. Choose a location that ensures that the main direction of loading is always ρ = 0°.
Dimensions
|
Ød |
mm |
20 | 25 | 30 | 40 | 50 | |
|
D |
mm |
32 | 40 | 47 | 62 | 75 | |
|
C |
h13 |
mm |
45 | 58 | 68 | 80 | 100 |
|
C1 |
H13 |
mm |
31.2 | 43.7 | 51.7 | 60.3 | 77.3 |
|
C2 |
mm |
1.6 | 1.85 | 2.15 | 2.65 | ||
|
D1 |
mm |
30.5 | 38.5 | 44.5 | 59 | 72 | |
|
K2 |
mm |
1.3 | 2 | 7 | 9.5 | 10 | |
|
K3 |
mm |
14.7 | 18.5 | 21 | 27.5 | 33.5 | |
|
S3 1) |
3 mm +0.1 | 3.5 mm +0.1 | 4.5 mm +0.1 | ||||
| 1) | Holes at center of dimension C |
Legend
|
Symbol |
Description |
Unit |
|
Ød |
Shaft diameters |
mm |
|
C/C0 |
Main direction of loading |
Initial lubrication
Linear bushings do not come with initial lubrication. Grease the Linear Bushings before use. Service life data is based on initial lubrication and relubricated Linear Bushings.
