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Shock Absorber, Short Type, RBQ Series (RBQ2508SN)
Shock absorber that can automatically adjust to the most appropriate energy absorption performance.
[Features]
· Absorbs impact and noise.
· Compact type that has been shortened lengthwise.
· Allowable deviation angle is 5°.
· Ideal for absorption of rotational energy.
· Can be used without an external stopper.
· The robust body can be positioned directly.
· RBQ: Basic type.
· RBQC: With damper.
(i)Caution
- Please refer to the catalog for specification details.
- Product images are representative images. Please refer to the catalog for detailed shapes.
Part Number
Configured Part Number is shown.
RBQ2508SN
Shock Absorber, Short Type, RBQ Series Specifications
RBQ Series (Basic Type) / RBQC Series (With Damper) external appearance
Allowable deviation angle is 5° allowing effective absorption of rotational energy
| Specifications | Model | |||||
|---|---|---|---|---|---|---|
| Basic Type | RBQ1604 | RBQ2007 | RBQ2508 | RBQ3009 | RBQ3213 | |
| With cap | RBQC1604 | RBQC2007 | RBQC2508 | RBQC3009 | RBQC3213 | |
| Max. absorbed energy (J)Note) | 1.96 | 11.8 | 19.6 | 33.3 | 49.0 | |
| Outer diameter thread size | M16 × 1.5 | M20 × 1.5 | M25 × 1.5 | M30 × 1.5 | M32 × 1.5 | |
| Stroke absorption mm | 4 | 7 | 8 | 8.5 | 13 | |
| Collision speed (m/s) | 0.05 to 3 | |||||
| Max. operating frequency (cycle/min) | 60 | 60 | 45 | 45 | 30 | |
| Max. allowable thrust (N) | 294 | 490 | 686 | 981 | 1,177 | |
| Ambient temperature range °C | -10 to 80 | |||||
| Spring force (N) | Extended | 6.08 | 12.75 | 15.69 | 21.57 | 24.52 |
| Compressed | 13.45 | 27.75 | 37.85 | 44.23 | 54.23 | |
| Weight g | 28 | 60 | 110 | 182 | 240 | |
| Optional: Stopper nut | RBQ16S | RBQ20S | RBQ25S | RBQ30S | RBQ32S | |
Note) Max. absorbed energy and max. operating frequency values are at room temperature (20 to 25°C).
Structural diagram / component parts
Structural diagram at collision
When a colliding object strikes against the piston rod end, it applies pressure to the oil inside the piston. This pressurized oil then jets out through the orifice inside the piston. This generates hydraulic resistance that absorbs the energy of the colliding object.
The oil that shoots out of the orifice is collected inside the outer tube by means of the accumulator expanding and contracting.
Structural diagram at return
When the colliding object is removed, the return spring pushes out the piston rod. At the same time, negative pressure causes the check ball to unseat to allow oil to return to the piston rod and the piston, ready for the next impact.
| Number | Part Name | Material | Treatment |
|---|---|---|---|
| 1 | Outer tube | Rolled steel | Black electroless nickel plating |
| 2 | Piston rod | Special steel | Heat treated, Hard chrome plating |
| 3 | Piston | Special steel | Heat treated |
| 4 | Bearing | Special bearing material | - |
| 5 | Return spring | Piano wire | Zinc chromate |
| 6 | Stopper | Carbon steel | Zinc chromate |
| 7 | Check ball | Bearing steel | - |
| 8 | Accumulator | Fluororubber | Foam rubber |
| 9 | Rod gasket | NBR | - |
| 10 | Scraper | NBR | - |
| 11 | Damper | Polyurethane | Only with damper |
Dimensional outline drawing
RBQ Series (Basic Type) dimensional drawing
RBQC Series (With Damper) dimensional drawing
RBQ Series Common dimensional drawing
(Units: mm)
| Model | Shock Absorber Main Body Dimensions | Hex nut dimensions | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Basic Type | With damper | D | E | F | H | K | G | LL | MM | S | B | C | h |
| RBQ1604 | RBQC1604 | 6 | 14.2 | 3.5 | 4 | 14 | 7 | 31 | M16 × 1.5 | 27 | 22 | 25.4 | 6 |
| RBQ2007 | RBQC2007 | 10 | 18.2 | 4 | 7 | 18 | 9 | 44.5 | M20 × 1.5 | 37.5 | 27 | 31.2 | 6 |
| RBQ2508 | RBQC2508 | 12 | 23.2 | 4 | 8 | 23 | 10 | 52 | M25 × 1.5 | 44 | 32 | 37 | 6 |
| RBQ3009 | RBQC3009 | 16 | 28.2 | 5 | 8.5 | 28 | 12 | 61.5 | M30 × 1.5 | 53 | 41 | 47.3 | 6 |
| RBQ3213 | RBQC3213 | 18 | 30.2 | 5 | 13 | 30 | 13 | 76 | M32 × 1.5 | 63 | 41 | 47.3 | 6 |
Kinetic energy E₁ or energy absorption E
Kinetic energy E₁ or energy absorption E calculation graph
Thrust energy at load m·g·s
Thrust energy at load m·g·s calculation graph
Equivalent mass Me
Equivalent mass graph
*The equivalent mass graph shows values at room temperature (20 to 25°C).
- *Please see catalog for information other than the above.
- * Image is of a representative model.
| Part Number |
|---|
| RBQ2508SN |
| Part Number | Standard Unit Price | Minimum order quantity | Volume Discount | Days to Ship | Stroke S (mm) | Mounting Screw Nominal M | Nominal Mounting Screw [M] | Max. Absorbed Energy (J) | Max. Collision Velocity (m/s) | Overall Length L (mm) | Max. Resisting Force Value (N) | Max. Operating Cycle (cycle/min) | Allowable Angular Misalignment (deg) | Option | With damper |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
- | 1 Piece(s) | Quote | - | - | 25 | 19.6 | - | - | 686 | 45 | - | Stopper nut: 1 pc. | None |
Loading...
Basic Information
| Main Body, Related Components | Main Body | Structure | Fixed Type | Orifice Type | Multi Orifice Type |
|---|---|---|---|---|---|
| Operating Environment | Standard | Body Material | Rolled Steel | Min. Collision Velocity(m/s) | 0.05 |
| Operating Temperature Range(°C) | -10 to 80 | Collision speed range(m/s) | 0.05 to 3 |
Please check the type/dimensions/specifications of the part RBQ2508SN in the Shock Absorber, Short Type, RBQ Series series.
Specification/Dimensions
-
Stroke S(mm)
-
Max. Collision Velocity(m/s)
-
Overall Length L(mm)
-
Allowable Angular Misalignment(deg)
-
type
- RBQ
- RBQC
-
Nominal Mounting Screw [M]
-
Max. Absorbed Energy(J)
-
Max. Resisting Force Value(N)
-
Max. Operating Cycle(cycle/min)
-
Option
- Stopper nut: 1 pc.
- Hexagon nut: 2 pcs.
- Hexagon nut: 2 pcs. / Stopper nut: 1 pc.
- Hex nut: 3 pcs.
- Hex nut: 3 pcs. / Stopper nut: 1 pc.
- None
-
With damper
- None
- With damper
-
CAD
- 2D
- 3D
Days to Ship
-
- All
- 31 Day(s) or Less
- 32 Day(s) or Less
Specify Alterations
- The specifications and dimensions of some parts may not be fully covered. For exact details, refer to manufacturer catalogs .
Similar Part Numbers
| Part Number |
|---|
| RBQ1604S |
| RBQ1604SN |
| RBQ2007 |
| RBQ3009 |
| RBQ3009J |
| RBQ3009S |
| Part Number | Standard Unit Price | Minimum order quantity | Volume Discount | Days to Ship | Stroke S (mm) | Mounting Screw Nominal M | Nominal Mounting Screw [M] | Max. Absorbed Energy (J) | Max. Collision Velocity (m/s) | Overall Length L (mm) | Max. Resisting Force Value (N) | Max. Operating Cycle (cycle/min) | Allowable Angular Misalignment (deg) | Option | With damper |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
SGD 97.30 | 1 Piece(s) | 32 Day(s) | 4 | M16 | 16 | 1.96 | 3 | 31 | 294 | 60 | 5 | Hexagon nut: 2 pcs. / Stopper nut: 1 pc. | None | ||
- | 1 Piece(s) | Quote | 4 | M16 | 16 | 1.96 | 3 | 31 | 294 | 60 | 5 | Stopper nut: 1 pc. | None | ||
SGD 121.57 | 1 Piece(s) | 31 Day(s) | 7 | M20 | 20 | 11.8 | 3 | 44.5 | 490 | 60 | 5 | Hexagon nut: 2 pcs. | None | ||
SGD 179.32 | 1 Piece(s) | 32 Day(s) | 8.5 | M30 | 30 | 33.3 | 3 | 61.5 | 981 | 45 | 5 | Hexagon nut: 2 pcs. | None | ||
- | 1 Piece(s) | Quote | 8.5 | M30 | 30 | 33.3 | 3 | 61.5 | 981 | 45 | 5 | Hex nut: 3 pcs. | None | ||
SGD 191.92 | 1 Piece(s) | 32 Day(s) | 8.5 | M30 | 30 | 33.3 | 3 | 61.5 | 981 | 45 | 5 | Hexagon nut: 2 pcs. / Stopper nut: 1 pc. | None |
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