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PC907778 — BEARING,FAN AND WATER PUMP

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

PC907778: BEARING,FAN AND WATER PUMP.

The BEARING,FAN AND WATER PUMP is a the manufacturer thermal management component critical for maintaining optimal operating temperatures in enterprise hardware. Key specifications include material: FIBER SEAL, overall_length: 4.6563 INCHES NOMINAL IN, style_designator: FAN AND WATER PUMP BALL TYPE, long_end_shaft_length: 2.5469 INCHES NOMINAL IN, short_end_shaft_length: 0.4531 INCHES NOMINAL IN, long_end_shaft_diameter: 0.6267 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-271-0381, 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
PC907778
NSN: 3110-00-271-0381
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: C7432 — POWER COMPONENTS (DEUTSCHLAND) GMBH (DEU)
SPECIFICATIONS
materialFIBER SEAL
overall_length4.6563 INCHES NOMINAL IN
style_designatorFAN AND WATER PUMP BALL TYPE
long_end_shaft_length2.5469 INCHES NOMINAL IN
short_end_shaft_length0.4531 INCHES NOMINAL IN
long_end_shaft_diameter0.6267 INCHES NOMINAL IN
overall_outside_diameter1.1811 INCHES NOMINAL IN
short_end_shaft_diameter0.6267 INCHES NOMINAL IN
NSN3110-00-271-0381
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: PC907778 · 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
•
SHORT END SHAFT LENGTH: 0.4531 INCHES NOMINAL IN
•
LONG END SHAFT LENGTH: 2.5469 INCHES NOMINAL IN
•
STYLE DESIGNATOR: FAN AND WATER PUMP BALL TYPE
•
SHORT END SHAFT DIAMETER: 0.6267 INCHES NOMINAL IN
•
OVERALL OUTSIDE DIAMETER: 1.1811 INCHES NOMINAL IN
•
LONG END SHAFT DIAMETER: 0.6267 INCHES NOMINAL IN
TYPICAL APPLICATIONS
  • Server thermal management and cooling
  • Hot-swap fan replacement in production environments
  • Redundant cooling for high-availability systems
TECHNICAL CHARACTERISTICS
SHORT END SHAFT LENGTH0.4531 INCHES NOMINAL IN
LONG END SHAFT LENGTH2.5469 INCHES NOMINAL IN
STYLE DESIGNATORFAN AND WATER PUMP BALL TYPE
OVERALL LENGTH4.6563 INCHES NOMINAL IN
SHORT END SHAFT DIAMETER0.6267 INCHES NOMINAL IN
OVERALL OUTSIDE DIAMETER1.1811 INCHES NOMINAL IN
SPECIAL FEATURES0.0468 IN. MIN 0.0781 IN. MAX R ON SHORT SHAFT END,0.0250 IN. MIN 0.0400 IN. MAX CORNER R ON BEARING OD SHORT SHAFT SIDE,30 DEG TAPER 0.3437 IN. LG ON LONG SHAFT END,0.1910 IN. DIA HOLE LOCATED 0.2344 IN. FROM END OF SHAFT DRILLED AT 60 DEG ANGLE TOWARD BEARING,END PLAY 0.0060 IN. MAX UNDER 15 LB LOAD,1 OIL GROOVE 0.0312 IN. R BOTH SIDES CUT AT 30 DEG ANGLE LOCATED ON OD AND C/L OF BEARING LBS
LONG END SHAFT DIAMETER0.6267 INCHES NOMINAL IN
MATERIALSTEEL OUTER RING
MATERIALFIBER SEAL
SUBSTITUTES & CROSS-REFERENCES 7
885103Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
885103X1CBReference document
Same NSN cross-reference
Reference document — Secondary reference
954414Reference document
Same NSN cross-reference
Reference document — Secondary reference
88P107BS1837RVReference document
Same NSN cross-reference
Reference document — Secondary reference
NNM0010060010281Reference document
Same NSN cross-reference
Reference document — Secondary reference
885103X1CReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is PC907778?
PC907778 is a BEARING,FAN AND WATER PUMP.
What parts can replace PC907778?
There are 7 known substitutes for PC907778: 885103, 885103X1CB, 954414 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for PC907778?
PC907778 is cataloged in the U.S. Government catalog under NSN 3110-00-271-0381. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.