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P Series

P series bearings from Schatz are single-row, self-aligning bearings for airframe control and aerospace. Manufactured to AS27645 per AS7949.

P-Series Bearings

P-series bearings are pulley-type bearings for aircraft control.
  • Manufactured to AS21443 per SAE AS7949 for MIL-P-7034 pulleys
  • All external surfaces except bore and stainless steel seal retainers are cadmium plated
  • Installed with PTFE seals
  • Pre-lubricated (see grease specifications)
  • Retainer type
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P-Series Schematic
p-series bearings schematics 1airframe control bearings schematics
wdt_ID Part Number MS 27443- Bore d (in.)<br>+.0000 to -.0005 Outside Diameter D (in.)<br>+.0000 to -.0005 Inner Ring Width B (in.)<br>+.000 to -.005 Outer Ring Width C (in.)<br>+.000 to -.005 Inner Land Diameter d1 (in.)<br>Approx. Inner Ring Chamfer c1 (in.) Outer Ring Chamfer c (in.) Radial Limit Load Rating (lbs.) † Thrust Limit Load Rating (lbs.) † Footnote(**) Footnote(***)
1 KP3K -3B 0.1900 0.7774 0.297 0.270 0.332 0.005 0.024 1090 600
2 KP3AK -3A 0.1900 0.6250 0.297 0.234 0.297 0.005 0.016 705 385
3 KP3AK-2 0.1900 0.6250 0.625 0.234 0.297 0.005 0.016 705 385
4 W4AK -4A 0.2500 0.7500 0.438 0.312 0.372 0.005 0.016 1090 600
5 KP4K -4C 0.2500 0.9014 0.484 0.335 0.390 0.005 0.034 1710 800
6 P4K -4B 0.2500 0.8750 0.438 0.375 0.423 0.005 0.022 1710 800
7 P5K -5A 0.3125 0.8750 0.625 0.375 0.455 0.005 0.022 1710 800
8 PD5K -5B 0.3125 0.9375 0.625 0.563 0.455 0.005 0.022 3420 1030
9 P8* -8 0.5000 1.6875 0.750 0.563 0.768 0.005 0.032 11800 5200 Full type – no retainer
10 P10K -10 0.6250 1.1875 0.438 0.375 0.769 0.005 0.022 2440 1100
Part Number MS 27443- Bore d (in.)<br>+.0000 to -.0005 Outside Diameter D (in.)<br>+.0000 to -.0005 Inner Ring Width B (in.)<br>+.000 to -.005 Outer Ring Width C (in.)<br>+.000 to -.005 Inner Land Diameter d1 (in.)<br>Approx. Inner Ring Chamfer c1 (in.) Outer Ring Chamfer c (in.) Radial Limit Load Rating (lbs.) † Thrust Limit Load Rating (lbs.) † Footnote(**) Footnote(***)
† Refer to the Technical Info section for Bearing Life Calculations.
* Full type – no retainer.

Notes:

  1. Designed for use in pulleys, the P Series bearings work well in other airframe applications. Do not use bearings as track rollers, cam follower rolls or for similar applications.
  2. Check with Schatz Bearing Corporation for current approval status.
  3. Contact Schatz Bearing Corporation’s Engineering Department for further technical information.
  4. Check with Schatz Bearing Corporation’s Sales Department for price and availability.
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