PSK 150 or PSK 200? This is how you recognize the difference by the rail height
During maintenance or renovation of a sliding door with PSK fittings
(PSK = Parallel-Slide-Tilt Fitting) one question is crucial:
Are you dealing with PSK 150 or PSK 200?
These systems look similar but are technically not interchangeable.
The main and most reliable distinction lies in the rail height.
Why correct PSK identification is so important
Incorrect identification of the PSK system often leads in practice to:
✓ heavy-running sliding doors
✓ accelerated wear of trolleys
✓ misalignment of the sliding part
✓ parts that do not fit or function incorrectly
That is why it is essential to correctly identify the system beforehand.
The real difference: rail height
PSK 150 – rail height 33 mm
The PSK 150 can be recognized by a bottom rail with a height of 33 mm.
✓ Rail height: 33 mm
✓ Specific trolleys for this rail
✓ Different fitting than PSK 200
✓ Widely used in existing and older situations
The rail height precisely determines which parts are technically applicable.
PSK 200 – rail height 43 mm
The PSK 200 has a clearly higher bottom rail of 43 mm.
✓ Rail height: 43 mm
✓ Different trolleys than PSK 150
✓ Different installation size and fitting
✓ Parts not interchangeable with PSK 150
Although the difference seems only 10 mm, mechanically it is a big difference.
PSK 150 vs PSK 200 – overview
|
|
PSK 150 |
PSK 200 |
|
Rail height |
✓ 33 mm |
✓ 43 mm |
|
Carriages |
✓ specific for 33 mm |
✓ specific for 43 mm |
|
Interchangeable |
✗ no |
✗ no |
How to measure the rail height yourself
✓ Measure the height of the raised part of the bottom rail
✓ Preferably use a caliper
✓ Always measure in multiple places
Result:
- 33 mm → PSK 150
- 43 mm → PSK 200
Also watch our YouTube video about PSK 150 and PSK 200
Because this difference can be difficult to recognize in practice, we have made a clear YouTube video about it.
🎥 In our video you will see:
✓ how to correctly measure the rail height
✓ the difference between PSK 150 and PSK 200 illustrated
✓ why carriages and rails are not interchangeable
✓ where things often go wrong in practice
👉 Watch the video on our YouTube channel:
https://www.youtube.com/@OpeningstechniekenNL
(or place the specific video link here directly)
Advice from Van Doorn Opening Technologies
At Van Doorn Opening Technologies, we help customers daily with identifying and replacing parts for PSK (Parallel-Sliding-Tilt Fittings), especially for GU systems.
Our advice:
✓ measure first
✓ then order parts
✓ unsure? contact us
👉 You can find all PSK parts and rails at:
https://openingstechnieken.com
Conclusion
✓ 33 mm rail height = PSK 150
✓ 43 mm rail height = PSK 200
That difference determines whether parts fit and whether a sliding door continues to operate smoothly and reliably.
