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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

p-series bearings schematics 1

airframe 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:

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.
Check with Schatz Bearing Corporation for current approval status.
Contact Schatz Bearing Corporation’s Engineering Department for further technical information.
Check with Schatz Bearing Corporation’s Sales Department for price and availability.

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