Chat NowAdjustable Shock Absorber Large Series RB-LROEM(XT)/RB-OEM(XT)
Caution
- ■ SMC Product Line
Webpages for products currently without individual pages on this site will be released on an ad-hoc basis.
■ Products Planned for Online Release
Air cylinder-related product pages will be released on this site on an ad-hoc basis.
CQ2/MG types, etc. are already available.
*Vacuum equipment, FRLs, solenoid valves, etc., will also be released on dedicated pages on this site on an ad-hoc basis
*The information above is correct as of December 2018. - Product images are representative images. Please refer to the catalog for detailed images.
Product Description
A shock absorber that can be adjusted for different collision speeds.
[Features]
· Built-in orifice opening/closing adjustment function.
· Absorbed energy is about 1.6 times that of conventional products.
· Adjustable.
· RB-LROEM (XT) low-speed type / RB-OEM (XT) standard type.
· Models available with or without cap included.
· Attached components: none / with lock collar / with stop collar / with rectangular flange / with square flange.
[Applications]
For use with robots, packing equipment, weaving machines, machine tools, etc.
Adjustable Shock Absorber Large Series RB-LROEM(XT)/RB-OEM(XT) Specifications
Adjustable Shock Absorber Large Series RB-LROEM(XT)/RB-OEM(XT) external appearance
Low-Speed Type RB-LROEM Series
| Model | RB-LROEMXT 1.5M × 1 | RB-LROEMXT 1.5M × 2 | RB-LROEMXT 2.0M × 2 | |
|---|---|---|---|---|
| Max. Absorbed Energy (J) | 425 | 850 | 2,260 | |
| Outer Diameter Thread Size | M42 × 1.5 | M64 × 2.0 | ||
| Stroke Absorption (mm) | 25 | 50 | 50 | |
| Collision Speed (m/s)* | 0.08 to 1.3 | 0.08 to 0.8 | ||
| Max. Absorbed Energy per Hour (J/hr) | 126,000 | 167,000 | 271,000 | |
| Max. Drag Value (N)Note | 20,000 | 20,000 | 51,000 | |
| Equivalent Mass Range (kg) | 240 to 142,000 | 480 to 284,000 | 800 to 771,000 | |
| Spring Force (N) | Extended | 49 | 49 | 76 |
| Compressed | 68 | 80 | 155 | |
| Max. Thrust (N) | 6,660 | 6,660 | 17,760 | |
| Temperature Range (°C) | -10 to +80 | |||
| Weight (kg) | 1.3 | 1.7 | 3.6 | |
| Attachable Components | Cap | ✓ | ✓ | ✓ |
| Stop Collar | ✓ | ✓ | ✓ | |
| Rectangular Flange | ✓ | ✓ | - | |
| Square Flange | - | - | ✓ | |
| Lock Collar | ✓ | ✓ | ✓ | |
Note: The maximum drag value is the impact force arising from collision when used at maximum absorbed energy.
*Indicates collision speed when one unit is used individually. If using two or more units in parallel, please refer to the catalog.
Standard Type / RB-OEM Series
| Model | RB-OEMXT 1.5M × 1 | RB-OEMXT 1.5M × 2 | RB-OEMXT 1.5M × 3 | RB-OEMXT 2.0M × 2 | RB-OEMXT 2.0M × 4 | RB-OEMXT 2.0M × 6 | RB-OEM 3.0M × 2 | RB-OEM 3.0M × 3.5 | RB-OEM 3.0M × 5 | RB-OEM 3.0M × 6.5 | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Max. Absorbed Energy (J) | 425 | 850 | 1,300 | 2,260 | 4,520 | 6,780 | 2,300 | 4,000 | 5,700 | 7,300 | |
| Outer Diameter Thread Size | M42 × 1.5 | M64 × 2.0 | M85 × 2.0 | ||||||||
| Stroke Absorption (mm) | 25 | 50 | 75 | 50 | 100 | 150 | 50 | 90 | 125 | 165 | |
| Collision Speed (m/s)* | 0.3 to 3.5 | 0.3 to 4.3 | |||||||||
| Max. Absorbed Energy per Hour (J/hr) | 126,000 | 167,000 | 201,000 | 271,000 | 362,000 | 421,000 | 372,000 | 652,000 | 933,000 | 1,215,000 | |
| Max. Drag Value (N)Note | 20,000 | 20,000 | 20,000 | 51,000 | 51,000 | 51,000 | 67,000 | 67,000 | 67,000 | 67,000 | |
| Equivalent Mass Range (kg) | 25 to 9,000 | 45 to 18,000 | 54 to 27,000 | 75 to 47,000 | 118 to 94,000 | 130 to 141,000 | 195 to 36,000 | 215 to 36,000 | 220 to 51,000 | 300 to 56,700 | |
| Spring Force (N) | Extended | 49 | 32 | 32 | 76 | 69 | 90 | 110 | 110 | 70 | 120 |
| Compressed | 68 | 68 | 80 | 155 | 160 | 285 | 196 | 196 | 196 | 330 | |
| Max. Thrust (N) | 2,890 | 2,890 | 2,890 | 6,660 | 6,660 | 6,660 | 12,000 | 12,000 | 12,000 | 12,000 | |
| Temperature Range (°C) | -10 to +80 | ||||||||||
| Weight (kg) | 1.3 | 1.7 | 2.1 | 3.6 | 4.9 | 6.4 | 5.7 | 6.8 | 8.2 | 10.2 | |
| Attachable Components | Cap | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Stop Collar | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | - | - | - | - | |
| Rectangular Flange | ✓ | ✓ | ✓ | - | - | - | - | - | - | - | |
| Square Flange | - | - | - | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | |
| Lock Collar | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | |
Note: The maximum drag value is the impact force arising from collision when used at maximum absorbed energy.
*Indicates collision speed when one unit is used individually. If using two or more units in parallel, please refer to the catalog.
List of Dimensions When Stop Collar Is Attached
List of dimensions for when RB-(LR)OEMXT1.5M × 1 and RB-(LR)OEMXT2.0M × 2 are attached
RB-OEMXT1.5M × 1 / RB-LROEMXT1.5M × 1
- No cap: stroke: 25 mm; A: 0 mm; allowable difference: 0 to 5 mm
- With cap: stroke: 25 mm; A: 18 mm; allowable difference: 0 to 4 mm
RB-OEMXT2.0M × 2/RB-LROEMXT2.0M × 2
- No cap: stroke: 50 mm; A: 0 mm; allowable difference: 0 to 10 mm
- With cap: stroke: 50 mm; A: 17 mm; allowable difference: 0 to 10 mm
List of dimensions for when RB-(LR)OEMXT1.5M × 2, RB-(LR)OEMXT1.5M × 3, RB-(LR)OEMXT2.0M × 4 and RB-(LR)OEMXT2.0M × 6 are attached
RB-OEMXT1.5M × 2 / RB-LROEMXT1.5M × 2
- No cap: stroke: 50 mm; A: 13 mm; allowable difference: 0 to 10 mm
- With cap: stroke: 50 mm; A: 31 mm; allowable difference: 0 to 4 mm
RB-OEMXT1.5M × 3
- No cap: stroke: 75 mm; A: 26 mm; allowable difference: 0 to 15 mm
- With cap: stroke: 75 mm; A: 44 mm; allowable difference: 0 to 4 mm
RB-OEMXT2.0M × 4
- No cap: stroke: 100 mm; A: 27 mm; allowable difference: 0 to 20 mm
- With cap: stroke: 100 mm; A: 44 mm; allowable difference: 0 to 19 mm
RB-OEMXT2.0M × 6
- No cap: stroke: 150 mm; A: 26 mm; allowable difference: 0 to 30 mm
- With cap: stroke: 150 mm; A: 43 mm; allowable difference: 0 to 13 mm
- *Dimension A indicates the available space for the shock absorber thread ridge when full stroke is used with the stop collar attached.
Example: RB-OEMXT2.0M × 2, without cap
When using with a stop collar affixed and a full stroke of 50 mm, dimension A is 0 mm, meaning that a lock collar cannot be used.
Also, when mounting to a frame, affix using the thread ridge at the rear of the unit. - *The term "allowable difference" refers to how much the stop collar can travel when the unit is used at less than full stroke.
Example: RB-OEMXT1.5M × 1B, with cap
When using a stop collar and the desired stopping point is at 20 mm of stroke, as 25 mm−20 mm=5 mm exceeds the allowable difference of 4 mm, a stop collar will not seat to the shock absorber thread ridge.
Please install it with a stroke of at least 21 mm. - *As energy absorption is reduced when used at a stroke shorter than full stroke, please check that there are no remaining impacts before using.
Notes
- *Absorbed Energy
Please select your product so that the total collision energy does not exceed the displayed maximum absorbed energy. This can lead to changes in characteristics and cause damage to the shock absorber. - *Collision Speed
Please make sure that collision speed is within the specified range. Neglecting to do so can lead to changes in damping properties and cause damage to the shock absorber. - *Parallel Use
The minimum speed is as follows:
RB-OEM Series: at least 0.8 m/s
RB-LROEM Series: at least 0.3 m/s
Please set up guides, etc. for colliding objects to ensure loads are balanced. Also, please make sure that the energy per unit is less than 60% of the maximum absorbed energy. - *Please refer to the catalog for product information other than the above.