PartsTable
Technical Data Sheet
51821 ✓ 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

The CUP,TAPERED ROLLER BEARING is a the manufacturer tape media or drive component used in enterprise backup, archival, and disaster recovery environments. Key specifications include material: PLASTIC OVERALL, design_type: FLUCTUATINGFLUCTUATING, overall_length: 5.500 INCHES NOMINAL5.500 INCHES NOMINAL IN, style_designator: PIERCING POINT, scale_measurement_range: +70.000 TO 105.000 DEG FAHRENHEIT+70.000 TO 105.000 DEG FAHRENHEIT, scale_adjustment_variation: 1 DEGREE1 DEGREE. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-142-4388, 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
51821
NSN: 3110-00-142-4388
FSC: 3110
CAGE: 56721 — PREMIER CENTRAL TRUCK BODY (USA)
SPECIFICATIONS
materialPLASTIC OVERALL
design_typeFLUCTUATINGFLUCTUATING
overall_length5.500 INCHES NOMINAL5.500 INCHES NOMINAL IN
special_featuresSHOCK MOUNTED; UNBREAKABLE SHIELD; BLUE SPIRIT LIQUID; USED W/OXYHOOD; UNIT QTY 2SHOCK MOUNTED; UNBREAKABLE SHIELD; BLUE SPIRIT LIQUID; USED W/OXYHOOD; UNIT QTY 2
style_designatorPIERCING POINT
scale_measurement_range+70.000 TO 105.000 DEG FAHRENHEIT+70.000 TO 105.000 DEG FAHRENHEIT
scale_adjustment_variation1 DEGREE1 DEGREE
part_name_assigned_by_controlling_agencyTHERMOMETER SELF-INDICATING LIQUID IN GLASS 70-105DEG F 5.5"LTHERMOMETER SELF-INDICATING LIQUID IN GLASS 70-105DEG F 5.5"L DEGF
NSN3110-00-142-4388
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 51821 · 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
OUTSIDE DIAMETER: 4.8125 INCHES NOMINAL IN
BACKFACE CORNER RADIUS: 0.1250 INCHES NOMINAL IN
MATERIAL: STEEL OVERALL
STYLE DESIGNATOR: NORMAL ANGLE
TYPICAL APPLICATIONS
  • Long-term data archival and compliance retention
  • Offsite backup and disaster recovery
  • Air-gapped ransomware protection
  • Cold storage tier for infrequently accessed data
TECHNICAL CHARACTERISTICS (FLIS)
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
OUTSIDE DIAMETER4.8125 INCHES NOMINAL IN
BACKFACE CORNER RADIUS0.1250 INCHES NOMINAL IN
OVERALL WIDTH1.1875 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
STYLE DESIGNATORNORMAL ANGLE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
NF-4003-CInterchangeable
interchangeable cross-reference
interchangeable
7309BGInterchangeable
interchangeable cross-reference
interchangeable
11246Interchangeable
interchangeable cross-reference
interchangeable
9954Interchangeable
interchangeable cross-reference
interchangeable
3248Interchangeable
interchangeable cross-reference
interchangeable
22578Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 51821?
51821 is a CUP,TAPERED ROLLER BEARING.
What parts can replace 51821?
There are 22 known substitutes for 51821: NF-4003-C, 7309BG, 11246 and 19 more. Substitute compatibility should be verified for your specific system.
Is 51821 still available?
51821 is currently cancelled.
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