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Technical Data Sheet
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138658 — BEARING,BALL,ANNULAR

✓ Government record, cited
Hama · TAPERED BEARING
PRODUCT OVERVIEW

138658: BEARING,BALL,ANNULAR.

- A4 business writing case, gives you the possibility to insert a pad on 4 sides - Clearly structured design - Compartment for A4 documents - Special compartment that allows you to insert an A4 writing pad/spiral-bound notepad on 4 sides - 2 pen loops - 1 viewing window for business cards - 4 compartments for business cards - 1 small compartment for sticky notes - High-quality textile look - The writing case includes no accessories or any other items - Suitable for left and right-handers - Embossed "Hama est. 1923" logo This part is cataloged in the U.S. Government catalog under NSN 3110-00-413-3952, indicating validated use in U.S.

government and defense logistics supply chains.

WHERE IT FITS
138658
NSN: 3110-00-413-3952
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 83086 — NEW HAMPSHIRE BALL BEARINGS INC DIV HITECH DIVISION (USA)
SPECIFICATIONS
materialSTEEL COMP 440C OUTER RING
bore_shapeSTRAIGHT
bore_diameter0.7496 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN
overall_width0.4360 INCHES MINIMUM AND 0.4370 INCHES MAXIMUM IN
load_directionRADIAL
surface_finishGROUND
shield_quantity2
style_designatorNON-LOADING GROOVE, NON-SEPARABLE
lubrication_materialGREASE
overall_outside_diameter1.6246 INCHES MINIMUM AND 1.6250 INCHES MAXIMUM IN
internal_fit-up_designationSTANDARD
retainer_fabrication_methodPRESSED
NSN3110-00-413-3952
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 138658 · Hama ⚠ 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
•
RETAINER FABRICATION METHOD: PRESSED
•
LUBRICATION MATERIAL: GREASE
•
INTERNAL FIT-UP DESIGNATION: STANDARD
•
SURFACE FINISH: GROUND
•
SHIELD QUANTITY: 2
•
STYLE DESIGNATOR: NON-LOADING GROOVE, NON-SEPARABLE
•
OVERALL OUTSIDE DIAMETER: 1.6246 INCHES MINIMUM AND 1.6250 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
RETAINER FABRICATION METHODPRESSED
LUBRICATION MATERIALGREASE
INTERNAL FIT-UP DESIGNATIONSTANDARD
SURFACE FINISHGROUND
SHIELD QUANTITY2
STYLE DESIGNATORNON-LOADING GROOVE, NON-SEPARABLE
OVERALL WIDTH0.4360 INCHES MINIMUM AND 0.4370 INCHES MAXIMUM IN
OVERALL OUTSIDE DIAMETER1.6246 INCHES MINIMUM AND 1.6250 INCHES MAXIMUM IN
BORE SHAPESTRAIGHT
LOAD DIRECTIONRADIAL
SUBSTITUTES & CROSS-REFERENCES 3
SS77R12XR5CJReference document
Same NSN cross-reference
Reference document — Secondary reference
SR12PPDABEC5Reference document
Same NSN cross-reference
Reference document — Secondary reference
AMS8KDDFS160Reference 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 138658?
138658 is a BEARING,BALL,ANNULAR manufactured by Hama.
What parts can replace 138658?
There are 3 known substitutes for 138658: SS77R12XR5CJ, SR12PPDABEC5, AMS8KDDFS160. Substitute compatibility should be verified for your specific system.
What is the NSN for 138658?
138658 is cataloged in the U.S. Government catalog under NSN 3110-00-413-3952. This indicates validated use in U.S. government and defense supply chains.
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