Airtac PSL Throttle Speed Control Fitting PSL6-02A
The AirTAC Airtac PSL Throttle Speed Control Fitting PSL6-02A is a genuine speed controller, threaded elbow with knob with aluminium-alloy locking cap and fixed tube direction, used to set the speed of a pneumatic cylinder by throttling its air.
- TypeSpeed controller, threaded elbow
- SeriesPSL
- Working pressure0 - 1.0 MPa (0 - 10 kgf/cm2)
- Proof pressure1.5 MPa
- AdjustmentKnob with aluminium-alloy locking cap
- Temperature-20 to +70 °C
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac PSL Throttle Speed Control Fitting PSL6-02A
The PSL6-02A screws into a 1/4in PT port and controls a Dia 6 tube, the smallest bore AirTAC pairs with this thread size. This is the meter-out version (suffix A, handle marked A): air flowing from the thread port out to the tube is throttled, while the return direction passes freely. AirTAC names meter-out as the first priority because on a double-acting cylinder driven by a solenoid valve, throttling the exhaust leaves a back-pressure cushion so the stroke stays smooth instead of stick-slipping under a changing load.
Speed is set with a knurled knob and held by an aluminium-alloy locking cap, so machine vibration or a knocked hose cannot drift the setting. The throttling column and body are brass, the holder is PBT plastic and the seal is NBR, with soft nylon or polyurethane tubing pushed onto the Dia 6 stub. Remember that a speed controller throttles but does not seal: even fully closed it weeps slightly by design, so use a separate valve when a circuit must be isolated.
Airtac PSL Throttle Speed Control Fitting PSL6-02A Technical Specifications
| Model | Airtac PSL Throttle Speed Control Fitting PSL6-02A |
|---|---|
| Type | Speed controller, threaded elbow |
| Series | PSL |
| Adjustment | Knob with aluminium-alloy locking cap |
| Orientation | Fixed tube direction |
| Working pressure | 0 - 1.0 MPa (0 - 10 kgf/cm2) |
|---|---|
| Negative pressure | -750 mmHg (10 Torr) |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Applicable tubing | Soft nylon or polyurethane tube |
| Thread standard | PT (Rc tapered) unless the code says otherwise |
POM release button and chuck, aluminium-alloy guide, stainless spring gasket, NBR O-ring; body brass or PBT depending on the part. A speed controller is not a shut-off valve - a small leak past a fully closed needle is normal. Close it before applying air, and turn it open slowly. AirTAC publishes flow as a characteristic curve rather than a single figure, so no L/min value is listed.
Model Code: Airtac PSL Throttle Speed Control Fitting PSL6-02A
| PSL | Speed controller, threaded elbow. |
|---|---|
| 4 / 6 / 8 / 10 / 12 | Tube outside diameter in mm (3.2 mm exists on the mini series). |
| M5 / 01 / 02 / 03 / 04 | Thread: M5x0.8, 1/8", 1/4", 3/8", 1/2" (M3 on the mini series). |
| A / B | A = meter-out (controls flow from the thread port to the tube). B = meter-in. |
| D | Black. Blank = grey. |
Meter-Out or Meter-In?
- check Meter-out (A) is the default. It throttles the air LEAVING the cylinder, so the piston runs against a back-pressure cushion and moves smoothly.
- check Use meter-out on double-acting cylinders - it is the one AirTAC lists as first priority.
- check Meter-in (B) throttles air ENTERING the cylinder. It suits single-acting cylinders and air motors.
- check Meter-in on a double-acting cylinder tends to give a jerky, stick-slip stroke under varying load.
- check Fit the controller at the cylinder port, not at the valve, so the throttled volume is as small as possible.
Where the Airtac PSL Throttle Speed Control Fitting PSL6-02A Is Used
Pick-and-place gripper head
On an electronics assembly head, a small-bore gripper cylinder fed by Dia 6 tubing opens with a damped motion so delicate components are released without being flung. The 1/4in port suits the compact valve manifold common on these frames.
Gentle clamp on finished surfaces
A fixture clamp closing on anodised laptop lids or polished stainless panels is set meter-out, so the pad lands softly and the locking cap keeps the touch fixed shift after shift.
Indexing pusher on a carton line
A pusher that transfers cartons between lug conveyor flights needs its advance timed to the chain. The knob at the cylinder port gives operators a one-hand speed trim during changeover.
Is the Airtac PSL Throttle Speed Control Fitting PSL6-02A the Right Part?
Within the 1/4in thread ladder this Dia 6 is the entry size; there is no smaller tube on this thread, so stepping down means dropping to a 1/8in port such as the PSL6-01A, which shrinks the fitting footprint for tighter manifolds. Stepping up to the PSL8-02A on the same 1/4in port gains tube bore and, with it, capacity for a hungrier cylinder without changing the tapped hole in your machine. If the hose must swivel to follow the actuator, the PSS6-02A universal version rotates 360 degrees on the same sizes.
Whichever you pick, fit the controller directly into the cylinder port rather than back at the valve: the volume of air being throttled then stays small and the cylinder responds crisply to each knob turn. Check the A/B arrow against your circuit before ordering, since the free and controlled directions are fixed by the code.
Quick checklist
- ✓ Tube outside diameter matches exactly
- ✓ Thread size and standard match the port
- ✓ Working pressure within 0 - 1.0 MPa (0 - 10 kgf/cm2)
- ✓ Temperature within -20 to +70 °C
- ✓ Meter-out (A) unless you know you need meter-in
Airtac PSL Throttle Speed Control Fitting PSL6-02A FAQ
Working pressure 0-1.0 MPa (0-10 kgf/cm2), proof pressure 1.5 MPa, usable under vacuum down to -750 mmHg (10 Torr), and a temperature range of -20 to +70 C. This SKU takes Dia 6 mm soft nylon or polyurethane tube on the tube side and has a 1/4in PT taper male thread on the port side. It is the meter-out (A) version with a knob and locking cap.
No. The A suffix fixes one controlled direction (thread port to tube) and one free direction, so each cylinder port that needs speed control gets its own controller. For speed control at both ends of a double-acting cylinder, fit a PSL6-02A at each port, oriented so the controlled arrow points the way air exits the cylinder. If you need tube-to-tube throttling inline in the hose run instead of at a port, the straight PSA family covers that shape.
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