Cushion-Function Speed Controller
Caution
- Some of the items are scheduled to be discontinued as of end of March in 2023. The manufacturer keep the items produced but they are not available with Misumi.
There are not the replacement items and the plan to resumption of sale. Please check the quotation and order screen for details.
Product Description
A speed controller with a cushion function that features a built-in shock absorbing capability, with no shock absorber required.
[Features]
・ A speed controller / throttle valve that can increase the cycle time if it has the same cushioning properties as before.
・ Adjustable cushion stroke.
・ It is possible to apply the cushion at a position where the shock absorber does not reach (intermediate stop of the cylinder).
・ It allows the same control as cylinders with shock absorbers. ()
・ It achieves two-step adjustment of exhaust flow rate. By using the second stage for cushioning, control similar to that of a shock absorber is possible.
・ Three times more durable than a shock absorber. It needs less maintenance and helps reduce costs.
[Applications]
・ Equipment for automatic doors and semiconductor manufacturing processes.
Specifications Of 2-Stage Speed Controller
Appearance of 2-Stage Speed Controller
Dimensional drawing
| Usable Fluids | Air |
|---|---|
| Operating Pressure Range | 0.2 to 1.0 MPa |
| Operating Temperature Range | 0 to 60℃ (no freezing) |
Structural Drawing
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.
| Needle | Timer Needle (TIM) | Speed Needle (EX1) | Cushion Needle (EX2) |
|---|---|---|---|
| Lock Nut Color | Pink | Silver | Blue |
Formats
Units: mm
| Format | Tube Outer Diameter øD | B1 | B2 | B3 | Tube End C | øP1 | øP2 | øP3 | ||
|---|---|---|---|---|---|---|---|---|---|---|
| Max. | Min. | Max. | Min. | |||||||
| BJSU4 | 4 | 51.1 | 38.4 | 34.7 | 37.1 | 34.4 | 14.9 | 10 | 10 | 10 |
| BJSU6 | 6 | 58.5 | 47 | 41.9 | 44.7 | 40.8 | 17 | 12.5 | 12.5 | 12.5 |
| BJSU8 | 8 | 65.5 | 53.8 | 48.7 | 52 | 49 | 18.1 | 14.5 | 12.5 | 14.5 |
| Format | T | F1 | F2 | F3 | Effective Cross-Sectional Area (mm2) | Mass (g) | ||
|---|---|---|---|---|---|---|---|---|
| IN > OUT | OUT > EX1 | OUT > EX2 | ||||||
| BJSU4 | 10.4 | 32 | 9.2 | 18.9 | 2.6 | 1.0 | 1.0 | 21 |
| BJSU6 | 13 | 38 | 9.5 | 22.7 | 4.5 | 2.0 | 2.0 | 33 |
| BJSU8 | 15 | 43 | 11.1 | 29.5 | 5.0 | 2.6 | 2.6 | 52 |