Full-diaphragm oil-bladder sealing
Full Bladder SealingAn elastic diaphragm replaces the conventional air chamber and oil seal. The oil stays fully enclosed in the bladder, so the leakage path is removed by design.
Precision Motion Control · Since 2016
Every impact,
Every impact,
stopped precisely.
Hydraulic shock absorbers, precision speed regulators, linear guide clamps and oil cups for vacuum circuit breakers. Full-diaphragm oil-bladder sealing delivers zero leakage, linear deceleration and maintenance-free operation.
20yrsDesign life
80,000cyclesMechanical life
400barRated pressure
0.06sClamp response
Engineering Core
Turn impact energy
Turn impact energy
into a controllable linear curve
Damping is not “blocking”. By design of the orifice area it holds the piston-chamber pressure constant through the whole stroke, bringing the moving mass to rest with the smallest possible force — the technical origin of every XNUBBER product.
Multi-orifice linear deceleration
Multi-orifice Linear DecelerationAs the piston descends the fixed orifices close one after another; total flow falls and piston speed drops smoothly to zero, avoiding hard impact and rebound.
Maintenance-free
Maintenance FreeNo external oil circuit, no top-up and no pressure setting. Oil cups are designed for a 20-year life and 80,000 cycles, with unchanged performance at any mounting angle.
Product Matrix
Six product lines,
Six product lines,
covering the chain from damping to locking
From a 5 mm-stroke miniature to a 51,900 Nm heavy-duty unit, from pneumatic clamping to breaker damping — selected or customised to the duty.
AC Series · Self-compensating
Self-compensating hydraulic shock absorber
No adjustment needed — it adapts to the load. Stroke 5–80 mm, up to 260 Nm, the most universal damping solution on an automation line.
AC0604 · AC0806 · AC1210 · AC2050 · AC3060
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AD Series · Adjustable
Adjustable hydraulic shock absorber
Damping curve set by a valve, for mixed products and varying loads. Stroke 10–165 mm, up to 51,900 Nm.
AD1210 · AD2540 · AD4275 · AD85165
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DC / HC Series · Dedicated
Dedicated shock absorbers
The DC series buffers the opening stroke of HV circuit breakers; the HC series handles stopper cylinders and station stops — compact, energy dense and stable under impact.
DC3010 · DC3606 · DC3612 · HC2010 · HC3316
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RB Series · Speed Regulator
Precision hydraulic speed regulators
Constant speed for feed and downward motion, self-compensating across 15–550 kgf, stroke 15–300 mm — for drilling, cutting and feeding.
RB-2415 · RB-2460 · RB-31100 · RB-31300A
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WYK / WYKS / WYPS · Guide Clamp
Linear guide clamps / rail locks
Normally open, normally closed and brake versions mount directly on a standard linear guide; holding force 300–3600 N, response ≤0.06 s.
WYK1501A → WYK5501A · WYKS series · WYPS series
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WY36 Series · Oil Cup
Oil cups for vacuum breakers
Suppresses opening bounce, limits opening stroke and adjusts opening speed. Gap, multi-orifice and adjustable types; rated 400 bar, maintenance-free.
WY3615092D · WY3610104K · WY3615M36D
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Also available
PC pneumatic guided check valves
SC stop nuts
F series mounting flanges
AN / HAN mounting plates
Interchangeable striker heads
Specifications
Specifications
Core data for the most common models. Stroke, energy, effective weight and cycle rate all have to match; the full range and outline dimensions are on the product page.
Self-compensating No manual adjustment · adapts to load and speed · −10 ~ +80 °C
| Model | Stroke mm | Max. energy Nm | Max. weight kg | Max. velocity m/s | Cycles/min | Weight g |
|---|---|---|---|---|---|---|
| AC0806 | 06 | 2 | 22 | 2.0 | 45 | 10.5 |
| AC1008 | 08 | 4 | 40 | 2.6 | 45 | 18.8 |
| AC1210 | 10 | 6 | 75 | 2.6 | 45 | 36 |
| AC1416 | 16 | 16 | 220 | 2.6 | 45 | 73 |
| AC2020 | 20 | 40 | 575 | 3.2 | 30 | 225 |
| AC2050 | 50 | 60 | 400 | 3.5 | 30 | 254 |
| AC2540 | 40 | 120 | 2000 | 3.5 | 28 | 430 |
| AC2580 | 80 | 198 | 1584 | 4.0 | 25 | 568 |
| AC3060 | 60 | 260 | 3250 | 3.0 | 20 | 1034 |
Adjustable Damping curve set by valve · for varying loads · up to 51,900 Nm
| Model | Stroke mm | Max. energy Nm | Max. weight kg | Max. velocity m/s | Cycles/min | Weight g |
|---|---|---|---|---|---|---|
| AD1210 | 10 | 15 | 70 | 3.0 | 30 | 60 |
| AD1425 | 25 | 30 | 125 | 3.0 | 30 | 145 |
| AD2540 | 40 | 125 | 978 | 3.2 | 20 | 453 |
| AD3650 | 50 | 320 | 1760 | 3.0 | 16 | 1132 |
| AD4275 | 75 | 820 | 6230 | 4.5 | 12 | 1705 |
| AD64100 | 100 | 3000 | 19300 | 3.5 | 12 | 4910 |
| AD85125 | 125 | 5700 | 42800 | 4.3 | 8 | 10910 |
| AD85165 | 165 | 7300 | 51900 | 4.3 | 8 | 13620 |
DC For HV circuit breakers HC For stopper cylinders and station stops · compact, energy dense
| Model | Series | Stroke mm | Max. energy Nm | Max. weight kg | Max. velocity m/s | Cycles/min | Weight g |
|---|---|---|---|---|---|---|---|
| DC3010 | DC | 10 | 40 | 50 | 3.5 | 12 | 280 |
| DC3606 | DC | 06 | 60 | 85 | 3.5 | 12 | 330 |
| DC3612 | DC | 12 | 95 | 85 | 3.5 | 12 | 405 |
| HC2010 | HC | 10 | 24 | 340 | 2.8 | 20 | 123 |
| HC2208 | HC | 08 | 45 | 250 | 1.5 | 20 | 162 |
| HC3316 | HC | 16 | 150 | 400 | 1.5 | 15 | 540 |
| FC2010 | HC | 10 | 24 | 340 | 2.8 | 20 | 106 |
| SFC2010 | HC | 10 | 24 | 340 | 2.8 | 20 | 85 |
Speed regulators Constant feed speed · 15–550 kgf self-compensating · 0 ~ +60 °C
| Model | Stroke mm | Load range kgf | Temp. °C | Weight g |
|---|---|---|---|---|
| RB-2415 | 15 | 15 ~ 350 | 0 ~ +60 | 360 |
| RB-2460 | 60 | 15 ~ 350 | 0 ~ +60 | 550 |
| RB-24100 | 100 | 15 ~ 350 | 0 ~ +60 | 770 |
| RB-31100 | 100 | 15 ~ 550 | 0 ~ +60 | 1408 |
| RB-3180A | 80 | 15 ~ 550 | 0 ~ +60 | 2200 |
| RB-31150A | 150 | 15 ~ 550 | 0 ~ +60 | 3100 |
| RB-31220A | 220 | 15 ~ 550 | 0 ~ +60 | 4100 |
| RB-31300A | 300 | 15 ~ 550 | 0 ~ +60 | 4200 |
Direct mount on standard linear guide
Guide Clamp
Clamping and braking,
Clamping and braking,
mounted right on the rail
A linear guide clamp consists of a housing, clamping element, piston, jaw and energy-storing spring. Mounted on a standard guide, it fixes the table, positions precisely, suppresses vibration and raises stiffness; brake versions add emergency braking.
WYK
Pneumatic normally openAir releases, loss of air clamps; compact with high holding force
650 – 2250 N
WYKS
Pneumatic normally closedSpring-applied, air-released; boost port available
300 – 1350 N
WYPS
Normally closed, with brakePower-off emergency braking prevents vertical-axis drop
1000 – 3600 N
Response≤ 0.06 s
Pressure0.2 – 0.8 MPa
Temp.0 – 70 °C
Brake life> 2000 cycles
Applications
Wherever impacts repeat,
Wherever impacts repeat,
we make it quiet
From the reciprocating slide of a high-speed packer to the opening stroke of a vacuum breaker, wherever there is inertia, impact or a need for precise positioning, damping and locking do the work.
Seal presses
Seal pressing, gentle end-of-stroke stops
Woodworking
Impact absorption in high-speed feeding, edge banding and cutting
Automation lines
Stops, slide damping, stable cycle
Special-purpose machines
Variable loads and mixed batches
Packaging machinery
Continuous duty at 20–45 cycles/min
Glass machinery
Gentle stops and slow alignment for fragile work
Vacuum breakers
Opening bounce control, stroke limiting and speed adjustment
Machining centres
Pneumatic clamping and positioning of tables and slides
How It Works
How linear deceleration happens
When the striker is hit, the rod moves in and compresses the oil, which is forced through a designed pattern of orifices into the accumulator. Hole size and layout set the flow, the flow sets the speed — so pressure stays constant through the whole stroke.
Impact
The striker takes the load, the rod starts to move in and chamber pressure rises.
Throttling
Oil passes through fixed and adjustable orifices into the accumulator, creating resistance.
Linear deceleration
As the piston descends it closes the orifices one by one; total flow falls and speed drops smoothly to zero.
Reset
At the end of the stroke the return spring pushes the rod back and the unit waits for the next impact.
PHASE Compressing
One impact, one force curve
The striker is loaded and the rod moves in. Oil in the high-pressure chamber has only one way out: a row of fixed orifices in the wall, into the accumulator. The further the piston travels, the more orifices it covers, so flow area — and with it flow and speed — falls, pressure stays constant and the load decelerates evenly to a stop.
- Piston speed
- Damping force
- Kinetic → heat
Orifices open 5 / 5
Force — strokeF / s
Schematic only — proportions and structure are simplified; the real curve depends on model, speed and load.
About XNUBBER
Xnubber Team
Founded in 2016, we develop, manufacture and sell precision hydraulic speed regulators, industrial shock absorbers, pneumatic guided check valves and accessories, together with training and technical support.
Full-diaphragm oil-bladder sealing achieves zero hydraulic-oil leakage, pairing product quality with a long service life. Main applications are seal presses, woodworking machinery, automation equipment, special-purpose machines, packaging machinery and glass machinery. For vacuum breakers and stopper cylinders we also offer dedicated damping and stop solutions.
We believe the value of a damping component is not on the quotation but in the 80,000th cycle of the machine. With engineered selection support, batch consistency and traceable manufacturing, XNUBBER is a long-term partner to equipment builders.
2016Founded
6Product lines · hundreds of models
80,000cyclesMechanical life
400barRated pressure
Contact
Tell us the duty,
Tell us the duty,
leave with the part number
Give us load, impact speed, stroke and cycle rate and we will return a selection, an energy check and a cross-reference.
- Phone
- +86 18662680768
- Landline
- +86-512-5705 2231 / +86-512-3662 7956
- birch@xnubber.com
- Address
- No. 58 Xinhua Road
- Company
- Xnubber Team
Selection enquiry
We will confirm the technical details by email or phone.