BOSCH REXROTH
R073022040
$243.96 USD
- BOSCH REXROTH
- Material:R073022040
- Model:KBSH-20-DD
Quantity in stock: 0
The Bosch Rexroth SUPER LINEAR BUSH (R073022040) is an advanced linear motion component designed for precise and heavy-load applications. This highprecision linear bushing features a closed design with a shaft diameter d and is equipped with two seals to enhance its operation and longevity. The SUPER SH series is engineered to offer superior dynamic load rating and rigidity, thanks to its additional running tracks that ensure optimal performance even under significant load. This model compensates for shaft deflection and misalignment up to a specified degree, ensuring smooth motion and reliable accuracy. It boasts a high travel speed capability, making it suitable for applications requiring quick linear movements. The bushing includes an optional integrated double-lipped wiper seal that protects against contamination while maintaining lubrication. Constructed with hardened steel loadbearing plates, machined ball guide grooves, and a machined steel loadbearing plate back, the SUPER LINEAR BUSH ensures maximum precision in operation. The POM ball retainer holds balls made of rolling bearing steel, which are organized in rows within the bushing. Two metal holding rings secure the components together. The product has been designed to work efficiently within a temperature range of -30°C to +80°C, accommodating various environmental conditions. Its outer diameter D allows for compatibility with corresponding equipment while maintaining a compact form factor. Dynamic load capacity C is one of the key specifications of this model, indicating its ability to handle active loads effectively. The static load rating further demonstrates its capacity to withstand stationary weights without compromising performance. With a weight of 0.2 kg and specific radial clearance options for the shaft bore, this linear bushing offers versatility in fitting different system requirements. Overall, the Bosch Rexroth SUPER LINEAR BUSH R073022040 is tailored for applications demanding high precision, durability, and the ability to handle both dynamic and static loads efficiently in various operational environments.
Super LB SH, closed, 20, with two seals
Super linear bushing
Super SH
Closed
Shaft diameter d = 20
With two seals
Unpacked Weight: 0.092 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 | 31.2 |
| 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 | 32 |
| Breakaway force | 5 |
| Maximum permissible linear speed vmax | 5 |
| Size D | 32 |
| Size D1 | 30.5 |
| 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 | 2530 |
| Size C h13 | 45 |
| Size C2 | 1.6 |
| Friction coefficient μ max. | 0.004 |
| Friction force | 2.5 |
| 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 |
| Shaft diameter d | 20 |
| Linear guide type | Linear bushing and shaft |
| Filter for linear bushings and shafts | Linear bushings |
| Format of linear bushings | – Closed |
| Dynamic load capacity C | 3530 |
| Weight | 0.092 |
| Size D1 with tolerance | 30.5 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.
