BOSCH REXROTH
R073002500
$279.16 USD
- BOSCH REXROTH
- Material:R073002500
- Model:KBSH-25
Quantity in stock: 0
The Bosch Rexroth SUPER LINEAR BUSH (R073002500) is a high-precision linear bushing designed for the smooth and accurate movement of heavy loads. This Super SH series model is closed, ensuring stability and support for the shaft without the need for external sealing. It features a shaft diameter 'd' that is specifically tailored to accommodate substantial loads without compromising on precision. Constructed with hardened steel load-bearing plates featuring meticulously machined ball guide grooves, this linear bushing guarantees maximum precision. The steel load-bearing plate back further enhances this precision, while additional running tracks augment both dynamic load rating and rigidity. This design effectively compensates for potential shaft deflection and misalignment up to the specified limits, ensuring reliable operation even under challenging conditions. The SUPER LINEAR BUSH has a high travel speed capability, with an optional integration of double-lipped wiper seals available to protect against contaminants. Its POM ball retainer and rolling bearing steel balls ensure durability and smooth operation. The bushing is held securely in place by two metal holding rings. With a dynamic load capacity C that applies to the main loading direction, this bushing can handle significant forces while maintaining low friction coefficients—this remains true even under varying loads due to its oil lubrication compatibility. The product can operate within an ambient temperature range of -30°C to +80°C, demonstrating its versatility across different environmental conditions. The outer diameter D of the bushing allows for easy integration into various setups. In terms of performance metrics, it boasts impressive static and dynamic load ratings along with minimal breakaway force requirements for movement initiation. This Bosch Rexroth SUPER LINEAR BUSH comes in size S 25 and weighs 0.2 kg, making it a robust yet compact solution for linear motion requirements in various applications where high precision and load capacity are crucial.
Super LB SH, closed, 25, without seal
Super linear bushing
Super SH
Closed
Shaft diameter d = 25
Without seal
Unpacked Weight: 0.189 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 | 0.189 |
| 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.
