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Technical Data Sheet
137378 ✓ Verified by PartsTable
· TAPERED BEARING
WHAT YOU NEED TO KNOW
Cup and cone sold separately — confirm both needed Timken series numbers indicate dimensions
Cup and cone NOT sold as set — verify order
PRODUCT OVERVIEW

DIAPHRAGM,ACTUATOR VALVE,SPECIAL. Key specifications include material: COPPER AND RUBBER SYNTHETIC, bead_diameter: 1.030 INCHES NOMINAL IN, hole_diameter: 0.156 INCHES NOMINAL IN, pressure_rating: 90.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS, outside_diameter: 2.220 INCHES NOMINAL IN, style_designator: SPECIAL SHAPED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-100-0237, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
137378
NSN: 3110-00-100-0237
FSC: 3110
CAGE: 24617 — GENERAL MOTORS CORP (USA)
SPECIFICATIONS
materialCOPPER AND RUBBER SYNTHETIC
bead_diameter1.030 INCHES NOMINAL IN
hole_diameter0.156 INCHES NOMINAL IN
pressure_rating90.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
outside_diameter2.220 INCHES NOMINAL IN
special_featuresOVERALL HGT 0.37,CENTER HOLE THRU 0.07 IN. THK,2 HOLES 1.80 IN. ACROSS C-TO-C 0.125 IN. DIA; MATL 0.010 GAUGE TRICOT JERSEY NYLON COATED ON SIDE PER AMS3212 IN
style_designatorSPECIAL SHAPED
bolt_hole_quantity6
material_thickness0.013 INCHES MINIMUM AND 0.019 INCHES MAXIMUM IN
bolt_circle_diameter1.800 INCHES NOMINAL IN
center_hole_diameter0.250 INCHES NOMINAL IN
supplementary_featuresDIAPHRAGM FOR IMPELLER INJECTION SPINNER DISCHARGE VALVE
NSN3110-00-100-0237
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 137378 · OEM ⚠ VERIFY BEFORE ORDERING Cup and cone sold separately — verify you are ordering BOTH parts or the correct component. Always replace cup and cone together — mismatched wear = premature failure ✓ BROKER TIP Taper angle determines axial load capacity. Steeper angle = higher axial load rating. Timken series numbers indicate dimensions — cross-reference carefully PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
BORE DIAMETER: 1.3750 INCHES NOMINAL IN
MATERIAL: STEEL OVERALL
CONE CORNER RADIUS: 0.0312 INCHES NOMINAL IN
CONE WIDTH: 1.1450 INCHES NOMINAL IN
STYLE DESIGNATOR: NORMAL ANGLE
TECHNICAL CHARACTERISTICS (FLIS)
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
BORE DIAMETER1.3750 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
CONE CORNER RADIUS0.0312 INCHES NOMINAL IN
CONE WIDTH1.1450 INCHES NOMINAL IN
STYLE DESIGNATORNORMAL ANGLE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 25
258802Interchangeable
interchangeable cross-reference
interchangeable
457221Interchangeable
interchangeable cross-reference
interchangeable
X552AInterchangeable
interchangeable cross-reference
interchangeable
211-0565-00Interchangeable
interchangeable cross-reference
interchangeable
094Interchangeable
interchangeable cross-reference
interchangeable
070063Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 137378?
137378 is a DIAPHRAGM,ACTUATOR VALVE,SPECIAL.
What parts can replace 137378?
There are 25 known substitutes for 137378: 258802, 457221, X552A and 22 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 137378?
137378 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-100-0237. This indicates validated use in U.S. government and defense supply chains.
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