Cushion-Function Speed Controller

Cushion-Function Speed Controller

A speed controller with a cushion function that features a built-in shock absorbing capability, with no shock absorber required.
· A speed ​​controller and throttle valve that lets you use conventional cushioning to improve the cycle time.
· The cushioning stroke can be adjusted.
· Cushioning can prove effective in positions where shock absorbers cannot reach (cylinder intermediate stops).
· It allows the same control as cylinders with shock absorbers. (Japanese Patent No. 5578502)
· It allows two-stage adjustment of the exhaust flow rate. It allows the same control as shock absorbers by using the second stage for cushioning.
· Three times more durable than a shock absorber. It needs less maintenance and helps reduce costs.
· Automatic doors and equipment for semiconductor manufacturing processes.

Specifications Of 2-Stage Speed Controller

Appearance of 2-Stage Speed Controller

Appearance of 2-Stage Speed Controller

Dimensional drawing

Dimensional drawing

Usable FluidsAir
Operating Pressure Range0.2 to 1.0 MPa
Operating Temperature Range0 to 60℃ (no freezing)

Structural Drawing

Speed needle (brass with electroless nickel plating), timer needle (special stainless steel)

Speed needle (brass with electroless nickel plating), timer needle (special stainless steel)
lock nut (aluminum)*2, inner ring (brass with electroless nickel plating)
resin body (PBT), diaphragm (HNBR), release ring (POM)
guide ring (brass with electroless nickel plating), lock claw (stainless steel)
elastic sleeve (NBR), valve retainer (aluminum)
valve element (HNBR), knob (brass with electroless nickel plating)
cushion needle (brass with electroless nickel plating), needle guide (brass with electroless nickel plating)
silencer (PVF), main spool guide (aluminum)
main valve spool (aluminum), main spool O-ring (HNBR), fixed O-ring (NBR)
stopper (stainless steel), spring (stainless steel), spool seal packing (HNBR)*1

  • * 1. The spool seal packing for BJSU6 and BJSU8 is NBR.
  • * 2. The lock nuts are color coded according to the function of the needle.
NeedleTimer Needle (TIM)Speed Needle (EX1)Cushion Needle (EX2)
Lock Nut ColorPinkSilverBlue


Units: mm

FormatTube Outer Diameter
B1B2B3Tube End
FormatTF1F2F3Effective Cross-Sectional Area (mm2)Mass
Part Number
Part NumberVolume DiscountDays to ShipOperating Temp. Range
Operating Pressure Range
Nominal Diameter of Tube D Applicable Fluids
12 Day(s) or more 0~600.2~1.04Air
12 Day(s) or more 0~600.2~1.06Air
12 Day(s) or more 0~600.2~1.08Air


  1. 1

Basic Information

Type Speed Controller Shape Union Straight Control Direction Meter-Out
Joint Type One-touch coupling one both sides Material PBT Environment, Applications Standard
Thread Material Brass Knob Type Standard Lock Nut Type Knurling

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