Aerospace Bearings

Aerospace Spherical Plain Bearings

Spherical Plain bearings are utilized in assemblies, links, rotors, wings, actuation, mounts, and many more uses.

Similar to the rod end products(,) they are available in Loader Slot, Split Ball, PTFE Lined, Long Life, Metal To Metal and Elastomeric Hybrids. Self-Lubricating or lined products work well in applications where the lubrication is not practical due to location or application limitations.

The most common industry standards for the spherical plain bearings is the Society of Automotive Engineers (SAE) AS81820 (formerly Mil-B-81820) and AS81936 (formerly Mil-B-81936).

Some examples of the spherical basic part numbers are
MS14101- ........ Narrow Lined Self-Lubricating Grooved Spherical
MS14102- ........ Wide Lined Self-Lubricating Chamfered Spherical
MS14103- ........ Wide Lined Self-Lubricating Grooved Spherical
MS14104- ........ Narrow Lined Self-Lubricating Chamfered Spherical
MS14101A- ..... Narrow Lined Self-Lubricating Grooved Spherical (LONG LIFE 100,000 CYCLES)
MS14102A- ..... Wide Lined Self-Lubricating Chamfered Spherical (LONG LIFE 100,000 CYCLES)
MS14103A- ..... Wide Lined Self-Lubricating Grooved Spherical (LONG LIFE 100,000 CYCLES)
MS14104A- ..... Narrow Lined Self-Lubricating Chamfered Spherical (LONG LIFE 100,000 CYCLES)
M81936 ............ Beryllium Copper Ball Spherical

Numerous options are available for special applications based on specific conditions, such as temperature, weight, load, misalignment and load strength factors.

Have special and custom requirements for your specific needs? Please contact us.

Narrow Lined Self-Lubricating Grooved Spherical Plain Bearing
Mil Spec
Governing Spec SAE-AS81820
Part Number Bore Inner Diameter Outer Diameter Ball Width Race Width Pitch Diameter Mis-Alignment
+.0000/-.0005 +.000/-.002 ±.005 +.000/-.008 Ref.
MS14101-3 .1900 .5625 .281 .218 .500 10°
MS14101-4 .2500 .6562 .343 .250 .594 10°
MS14101-5 .3125 .7500 .375 .281 .650 10°
MS14101-5A .3125 .7500 .375 .281 .660 10°
MS14101-6 .3750 .8125 .406 .312 .712 9°
MS14101-7 .4375 .9062 .437 .343 .806 8°
MS14101-8 .5000 1.0000 .500 .390 .876 8°
MS14101-9 .5625 1.0937 .562 .437 .970 8°
MS14101-10 .6250 1.1875 .625 .500 1.063 8°
MS14101-12 .7500 1.4375 .750 .593 1.313 8°
MS14101-14 .8750 1.5625 .875 .703 1.438 8°
MS14101-16 1.0000 1.7500 1.000 .797 1.626 8°
Wide Lined Self-Lubricating Grooved Spherical Plain Bearing
Mil Spec
Governing Spec SAE-AS81820
Part Number Bore Inner Diameter Outer Diameter Ball Width Race Width Pitch Diameter Mis-Alignment
+.0000/-.0005 +.000/-.002 ±.005 +.000/-.008 Ref.
MS14103-3 .1900 .6250 .437 .327 .563 15°
MS14103-4 .2500 .6250 .437 .327 .563 15°
MS14103-5 .3125 .6875 .437 .317 .625 14°
MS14103-6 .3750 .8125 .500 .406 .712 8°
MS14103-7 .4375 .9375 .562 .442 .837 10°
MS14103-7A .4375 .9062 .562 .442 .806 10°
MS14103-8 .5000 1.0000 .625 .505 .900 9°
MS14103-9 .5625 1.1250 .687 .536 1.025 10°
MS14103-10 .6250 1.1875 .750 .567 1.087 12°
MS14103-12 .7500 1.3750 .875 .630 1.251 13°
MS14103-14 .8750 1.6250 .875 .755 1.501 6°
MS14103-16 1.0000 2.1250 1.375 1.005 2.001 12°
Narrow Lined Self-Lubricating Grooved Spherical Plain Bearing
Long Life 100,000 CYCLES
Governing Spec SAE-AS81820
Part Number Bore Inner Diameter Outer Diameter Ball Width Race Width Pitch Diameter Mis-Alignment
+.0000/-.0005 +.000/-.002 ±.005 +.000/-.008 Ref.
MS14101A-3 .1900 .5625 .281 .218 .500 10°
MS14101A-4 .2500 .6562 .343 .250 .594 10°
MS14101A-5 .3125 .7500 .375 .281 .650 10°
MS14101A-5A .3125 .7500 .375 .281 .660 10°
MS14101A-6 .3750 .8125 .406 .312 .712 9°
MS14101A-7 .4375 .9062 .437 .343 .806 8°
MS14101A-8 .5000 1.0000 .500 .390 .876 8°
MS14101A-9 .5625 1.0937 .562 .437 .970 8°
MS14101A-10 .6250 1.1875 .625 .500 1.063 8°
MS14101A-12 .7500 1.4375 .750 .593 1.313 8°
MS14101A-14 .8750 1.5625 .875 .703 1.438 8°
MS14101A-16 1.0000 1.7500 1.000 .797 1.626 9°
Wide Lined Self-Lubricating Grooved Spherical Plain Bearing
Long Life 100,000 CYCLES
Governing Spec SAE-AS81820
Part Number Bore Inner Diameter Outer Diameter Ball Width Race Width Pitch Diameter Mis-Alignment
+.0000/-.0005 +.000/-.002 ±.005 +.000/-.008 Ref.
MS14103A-3 .1900 .6250 .437 .327 .563 15°
MS14103A-4 .2500 .6250 .437 .327 .563 15°
MS14103A-5 .3125 .6875 .437 .317 .625 14°
MS14103A-6 .3750 .8125 .500 .406 .712 8°
MS14103A-7 .4375 .9375 .562 .442 .837 10°
MS14103A-7A .4375 .9062 .562 .442 .806 10°
MS14103A-8 .5000 1.0000 .625 .505 .900 9°
MS14103A-9 .5625 1.1250 .687 .536 1.025 10°
MS14103A-10 .6250 1.1875 .750 .567 1.087 12°
MS14103A-12 .7500 1.3750 .875 .630 1.251 13°
MS14103A-14 .8750 1.6250 .875 .755 1.501 6°
MS14103A-16 1.0000 2.1250 1.375 1.005 2.001 12°
Narrow Lined Self-Lubricating Chamfered Spherical Plain Bearing
Mil Spec
Governing Spec SAE-AS81820
Part Number Bore Inner Diameter Outer Diameter Ball Width Race Width Chamfer Type Mis-Alignment
+.0000/-.0005 +.000/-.002 ±.005 x 45° Ref.
MS14104-3 .1900 .5625 .281 .218 .010
.020		 10°
MS14104-4 .2500 .6562 .343 .250 .010
.020		 10°
MS14104-5 .3125 .7500 .375 .281 .010
.020		 10°
MS14104-5A .3125 .7500 .375 .281 .020
.030		 10°
MS14104-6 .3750 .8125 .406 .312 .020
.030		 9°
MS14104-7 .4375 .9062 .437 .343 .020
.030		 8°
MS14104-8 .5000 1.0000 .500 .390 .020
.030		 8°
MS14104-9 .5625 1.0937 .562 .437 .020
.030		 8°
MS14104-10 .6250 1.1875 .625 .500 .020
.030		 8°
MS14104-12 .7500 1.4375 .750 .593 .030
.040		 8°
MS14104-14 .8750 1.5625 .875 .703 .030
.040		 8°
MS14104-16 1.0000 1.7500 1.000 .797 .030
.040		 8°
Wide Lined Self-Lubricating Chamfered Spherical Plain Bearing
Mil Spec
Governing Spec SAE-AS81820
Part Number Bore Inner Diameter Outer Diameter Ball Width Race Width Chamfer Type Mis-Alignment
+.0000/-.0005 +.000/-.002 ±.005 x 45° Ref.
MS14102-3 .1900 .6250 .437 .327 .010
.020		 15°
MS14102-4 .2500 .6250 .437 .327 .010
.020		 15°
MS14102-5 .3125 .6875 .437 .317 .010
.020		 14°
MS14102-6 .3750 .8125 .500 .406 .020
.030		 8°
MS14102-7 .4375 .9375 .562 .442 .020
.030		 10°
MS14102-7A .4375 .9062 .562 .442 .020
.030		 10°
MS14102-8 .5000 1.0000 .625 .505 .020
.030		 9°
MS14102-9 .5625 1.1250 .687 .536 .020
.030		 10°
MS14102-10 .6250 1.1875 .750 .567 .020
.030		 12°
MS14102-12 .7500 1.3750 .875 .630 .030
.040		 13°
MS14102-14 .8750 1.6250 .875 .755 .030
.040		 6°
MS14102-16 1.0000 2.1250 1.375 1.005 .030
.040		 12°
Narrow Lined Self-Lubricating Chamfered Spherical Plain Bearing
Long Life 100,000 CYCLES
Governing Spec SAE-AS81820
Part Number Bore Inner Diameter Outer Diameter Ball Width Race Width Chamfer Type Mis-Alignment
+.0000/-.0005 +.000/-.002 ±.005 x 45° Ref.
MS14104A-3 .1900 .5625 .281 .218 .010
.020		 10°
MS14104A-4 .2500 .6562 .343 .250 .010
.020		 10°
MS14104A-5 .3125 .7500 .375 .281 .010
.020		 10°
MS14104A-5A .3125 .7500 .375 .281 .020
.030		 10°
MS14104A-6 .3750 .8125 .406 .312 .020
.030		 9°
MS14104A-7 .4375 .9062 .437 .343 .020
.030		 8°
MS14104A-8 .5000 1.0000 .500 .390 .020
.030		 8°
MS14104A-9 .5625 1.0937 .562 .437 .020
.030		 8°
MS14104A-10 .6250 1.1875 .625 .500 .020
.030		 8°
MS14104A-12 .7500 1.4375 .750 .593 .030
.040		 8°
MS14104A-14 .8750 1.5625 .875 .703 .030
.040		 8°
MS14104A-16 1.0000 1.7500 1.000 .797 .030
.040		 9°
Wide Lined Self-Lubricating Chamfered Spherical Plain Bearing
Long Life 100,000 CYCLES
Governing Spec SAE-AS81820
Part Number Bore Inner Diameter Outer Diameter Ball Width Race Width Chamfer Type Mis-Alignment
+.0000/-.0005 +.000/-.002 ±.005 x 45° Ref.
MS14102A-3 .1900 .6250 .437 .327 .010
.020		 15°
MS14102A-4 .2500 .6250 .437 .327 .010
.020		 15°
MS14102A-5 .3125 .6875 .437 .317 .010
.020		 14°
MS14102A-6 .3750 .8125 .500 .406 .020
.030		 8°
MS14102A-7 .4375 .9375 .562 .442 .020
.030		 10°
MS14102A-7A .4375 .9062 .562 .442 .020
.030		 10°
MS14102A-8 .5000 1.0000 .625 .505 .020
.030		 9°
MS14102A-9 .5625 1.1250 .687 .536 .020
.030		 10°
MS14102A-10 .6250 1.1875 .750 .567 .020
.030		 12°
MS14102A-12 .7500 1.3750 .875 .630 .030
.040		 13°
MS14102A-14 .8750 1.6250 .875 .755 .030
.040		 6°
MS14102A-16 1.0000 2.1250 1.375 1.005 .030
.040		 12°
* Dimensions and Values provided are for reference only. A full specification can be obtained at the Society of Automotive Engineering website