Shock Absorber, Short Type, RBQ Series

Brand :

SMC

Caution

Please refer to the catalog for specification details.
Product images are representative images. Please refer to the catalog for detailed shapes.

Product Description

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.

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
Spring force (N)	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.