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Shock Absorber, Short Type, RBQ Series (RBQ2508S)

Shock Absorber, Short Type, RBQ Series RBQ2508S

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.

PDF

Shock Absorber, Short Type, RBQ Series Specifications

RBQ Series (Basic Type) / RBQC Series (With Damper) external appearance

RBQ Series (Basic Type) / RBQC Series (With Damper) external appearance

Allowable deviation angle is 5° allowing effective absorption of rotational energy

Allowable deviation angle is 5° allowing effective absorption of rotational energy

SpecificationsModel
Basic TypeRBQ1604RBQ2007RBQ2508RBQ3009RBQ3213
With capRBQC1604RBQC2007RBQC2508RBQC3009RBQC3213
Max. absorbed energy (J)Note)1.9611.819.633.349.0
Outer diameter thread sizeM16 × 1.5M20 × 1.5M25 × 1.5M30 × 1.5M32 × 1.5
Stroke absorption mm4788.513
Collision speed (m/s)0.05 to 3
Max. operating frequency (cycle/min)6060454530
Max. allowable thrust (N)2944906869811,177
Ambient temperature range °C-10 to 80
Spring force (N)Extended6.0812.7515.6921.5724.52
Compressed13.4527.7537.8544.2354.23
Weight g2860110182240
Optional: Stopper nutRBQ16SRBQ20SRBQ25SRBQ30SRBQ32S

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

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

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.

NumberPart NameMaterialTreatment
1Outer tubeRolled steelBlack electroless nickel plating
2Piston rodSpecial steelHeat treated, Hard chrome plating
3PistonSpecial steelHeat treated
4BearingSpecial bearing material-
5Return springPiano wireZinc chromate
6StopperCarbon steelZinc chromate
7Check ballBearing steel-
8AccumulatorFluororubberFoam rubber
9Rod gasketNBR-
10ScraperNBR-
11DamperPolyurethaneOnly with damper

Dimensional outline drawing

RBQ Series (Basic Type) dimensional drawing

RBQ Series (Basic Type) dimensional drawing

RBQC Series (With Damper) dimensional drawing

RBQC Series (With Damper) dimensional drawing

RBQ Series Common dimensional drawing

RBQ Series Common dimensional drawing

 

(Units: mm)

 

ModelShock Absorber Main Body DimensionsHex nut dimensions
Basic TypeWith damperDEFHKGLLMMSBCh
RBQ1604RBQC1604614.23.5414731M16 × 1.5272225.46
RBQ2007RBQC20071018.24718944.5M20 × 1.537.52731.26
RBQ2508RBQC25081223.248231052M25 × 1.54432376
RBQ3009RBQC30091628.258.5281261.5M30 × 1.5534147.36
RBQ3213RBQC32131830.2513301376M32 × 1.5634147.36

Kinetic energy E₁ or energy absorption E

Kinetic energy E₁ or energy absorption E calculation graph

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

Thrust energy at load m·g·s calculation graph

Equivalent mass Me

Equivalent mass graph

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
RBQ2508S
Part NumberStandard Unit PriceMinimum order quantityVolume DiscountDays to ShipStroke 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 145.25

1 Piece(s) 32 Day(s) 8M252519.6352686455Hexagon nut: 2 pcs. / Stopper nut: 1 pc.None

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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 RBQ2508S in the Shock Absorber, Short Type, RBQ Series series.

Similar Part Numbers

Part Number
RBQ1604S
RBQ1604SN
RBQ2007
RBQ2508SJ
RBQ2508SN
RBQ3009
Part NumberStandard Unit PriceMinimum order quantityVolume DiscountDays to ShipStroke 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) 4M16161.96331294605Hexagon nut: 2 pcs. / Stopper nut: 1 pc.None

-

1 Piece(s) Quote 4M16161.96331294605Stopper nut: 1 pc.None

SGD 121.57

1 Piece(s) 31 Day(s) 7M202011.8344.5490605Hexagon nut: 2 pcs.None

-

1 Piece(s) Quote 8M252519.6352686455Hex nut: 3 pcs. / Stopper nut: 1 pc.None

-

1 Piece(s) Quote --2519.6--68645-Stopper nut: 1 pc.None

SGD 179.32

1 Piece(s) 32 Day(s) 8.5M303033.3361.5981455Hexagon nut: 2 pcs.None

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