KS P20, P22 and P23
Material information
P20, P22 and P23... low-maintenance standard solutions
P20, P22 and P23 are leaded standard sliding materials with a high performance. They are designed for low-maintenance grease or liquid-lubricated applications. The standard P20 version features oil distributing pockets according to DIN ISO 3547 in the sliding surface and a pre-finished wall thickness. The P22 versions (smooth sliding surface, suitable for reworking) and P23 (smooth sliding surface, ready to install) are also available on request.
Material production
The bronze compound layer is sintered onto a prepared steel surface (band) in a continuous sintering process in such a way as to produce a pore volume of around 50 % at a layer thickness of approx. 0.3 mm.
Next, the sliding layer is applied in powder form and rolled into the cavities in the compound layer under a high temperature.
The result is a sliding layer thickness of approx. 0.08 mm or approx. 0.2 mm above the compound layer, depending on the intended purpose.
At the same time, the oil distributing pockets are produced, if required. A further rolling calibration process then adjusts the necessary thickness tolerance of the composite material.
Important!
The materials P20, P22 and P23 contain lead and must therefore not be used in the food sector!
Plain bearing production
Sliding elements in a great variety of designs are produced from the composite material in cutting, stamping and shaping processes.
Standard designs are:
- Cylindrical bushes
- Thrust washers
- Strips
In a final step, plain bearings manufactured from P20, P22 or P23 undergo corrosion protection treatment on the bearing back, face reliefs and striking faces.
Standard version: Tin
layer thickness: approx. 0.002 mm
Note: Tin is used as temporary corrosion protection and an assembly aid
Characteristics
- Service life lubrication possible
- Low wear
- Low sensitivity to edge load
- Good damping behaviour
- Insensitive to impact load
- Good chemical resistance
Preferred areas of application
- Low-maintenance operation under lubrication conditions
- Rotating or oscillating movements up to a velocity of 3 m/s
- Linear movements up to 6 m/s
- Temperature range -40 °C to 110 °C
Material composition
Layer systems P20, P22, P23
1 Sliding layer
PVDF matrix with bulking agents¹)
Layer thickness [mm]: 0.08 - 0.20
2 Intermediate layer
Tin-bronze
Layer thickness [mm]: 0.20 - 0.35
Pore volume [%]: Approx. 50
3 Bearing back
Steel
Steel thickness [mm]: Variable
Steel hardness [HB]: 100 – 180
1) The pores of the sliding layer are also filled with this lubricant mass.
Chemical composition
Sliding layer
| Components | % weight |
|---|---|
| PVDF | 51 |
| PTFE | 8 |
| Pb | 41 |
Interlayer
| Components | % weight |
|---|---|
| Sn | 9 to 11 |
| Cu | Rest |
Bearing back
| Material | Material information |
|---|---|
| Steel | DC04 DIN EN 10130 DIN EN 10139 |
Material characteristics
| Characteristic values, load limit | Designation | Unit | Value |
|---|---|---|---|
| Permitted pv value | pvzul. | MPa·m/s | 3 |
| Permitted specific bearing load | |||
| pvzul. | MPa | 250 |
| pvzul. | MPa | 140 |
| pvzul. | MPa | 70 |
| pvzul. | MPa | 35 |
| Permitted sliding speed | |||
| vzul. | m/s | 3 |
| vzul. | m/s | 6 |
| vzul. | m/s | 6 |
| Permitted temperature | Tzul. | °C | -40 to +110 |
| Coefficient of thermal expansion | |||
| αSt | K-1 | 11*10-6 |
| Coefficient of thermal conductivity | |||
| λSt | W(mK)-1 | < 40 |
Models and tables of dimensions
Model range P20, P22 and P23
- Bushes PAP.. KS Permaglide P20
Description Di Do B PAP 0808 P20 8 10 8 PAP 0810 P20 8 10 10 PAP 0812 P20 8 10 12 PAP 10050 P20 100 105 50 PAP 10060 P20 100 105 60 PAP 1008 P20 10 12 8 PAP 1010 P20 10 12 10 PAP 1015 P20 10 12 15 PAP 1210 P20 12 14 10 PAP 1212 P20 12 14 12 PAP 1215 P20 12 14 15 PAP 1220 P20 12 14 20 PAP 1420 P20 14 16 20 PAP 1510 P20 15 17 10 PAP 1515 P20 15 17 15 PAP 1525 P20 15 17 25 PAP 1612 P20 16 18 12 PAP 1615 P20 16 18 15 PAP 1620 P20 16 18 20 PAP 1815 P20 18 20 15 PAP 1820 P20 18 20 20 PAP 2015 P20 20 23 15 PAP 2020 P20 20 23 20 PAP 2030 P20 20 23 30 PAP 2220 P20 22 25 20 PAP 2515 P20 25 28 15 PAP 2520 P20 25 28 20 PAP 2525 P20 25 28 25 PAP 2530 P20 25 28 30 PAP 2830 P20 28 32 30 PAP 3020 P20 30 34 20 PAP 3025 P20 30 34 25 PAP 3030 P20 30 34 30 PAP 3040 P20 30 34 40 PAP 3230 P20 32 36 30 PAP 3520 P20 35 39 20 PAP 3530 P20 35 39 30 PAP 3550 P20 35 39 50 PAP 4020 P20 40 44 20 PAP 4030 P20 40 44 30 PAP 4040 P20 40 44 40 PAP 4050 P20 40 44 50 PAP 4540 P20 45 50 40 PAP 4550 P20 45 50 50 PAP 5025 P20 50 55 25 PAP 5040 P20 50 55 40 PAP 5060 P20 50 55 60 PAP 5540 P20 55 60 40 PAP 6030 P20 60 65 30 PAP 6040 P20 60 65 40 PAP 6060 P20 60 65 60 PAP 6070 P20 60 65 70 PAP 7040 P20 70 75 40 PAP 7050 P20 70 75 50 PAP 7070 P20 70 75 70 PAP 7540 P20 75 80 40 PAP 7580 P20 75 80 80 PAP 8040 P20 80 85 40 PAP 8055 P20 80 85 55 PAP 8060 P20 80 85 60 PAP 8080 P20 80 85 80 PAP 9060 P20 90 95 60 - Thrust washers PAW.. KS Permaglide P20
Description Di Do B PAW 20 P20 20 36 1,5 PAW 22 P20 22 38 1,5 PAW 52 P20 52 78 2,0 PAW 12 P20 12 24 1,5 PAW 14 P20 14 26 1,5 PAW 42 P20 42 66 1,5 PAW 26 P20 26 44 1,5 PAW 18 P20 18 32 1,5 PAW 32 P20 32 54 1,5 PAW 28 P20 28 48 1,5 PAW 38 P20 38 62 1,5 PAW 48 P20 48 74 2,0 - Strips PAS.. KS Permaglide P20
Description L B S3 PAS 15180 P20 500 180 1,48 PAS 10180 P20 500 180 0,99 PAS 25180 P20 500 180 2,46 PAS 20180 P20 500 180 1,97
