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Technical Data Sheet

291-8 — Technical Data Sheet

✓ Verified by PartsTable
Middle Atlantic Products · 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

External Elbow Fitting in Ivory. Key specifications include phase: SINGLE ALL VOLTAGES, length: 18.547 INCHES NOMINAL IN, material: PLASTIC POLYTETRAFLUOROETHYLENE, body_style: TUBULAR, SINGLE COIL DOUBLE TERMINALS, body_width: 4.600 INCHES MAXIMUM IN, flow_angle: 90.0 DEGREES. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 3110-00-156-1908, 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
291-8
NSN: 3110-00-156-1908
FSC: 3110
CAGE: 38443 — SKF USA INC. (USA)
SPECIFICATIONS
phaseSINGLE ALL VOLTAGES
length18.547 INCHES NOMINAL IN
materialPLASTIC POLYTETRAFLUOROETHYLENE
body_styleTUBULAR, SINGLE COIL DOUBLE TERMINALS
body_width4.600 INCHES MAXIMUM IN
flow_angle90.0 DEGREES
leg_length1.219 INCHES NOMINAL FIRST END IN
seat_angle37.0 DEGREES FIRST END
body_height5.300 INCHES MAXIMUM IN
body_length6.100 INCHES MAXIMUM IN
thread_class3A ALL ENDS A
alignment_typeRIGID
NSN3110-00-156-1908
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 291-8 · Middle Atlantic Products ⚠ 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
•
ALIGNMENT TYPE: RIGID
•
BORE SMALLEST DIAMETER: 90.0 MILLIMETERS NOMINAL MM
•
MATERIAL: STEEL COMP E51100 OR STEEL COMP E52100 OVERALL
•
THRUST DIRECTIONAL CAPABILITY DESIGNATION: SINGLE
•
OVERALL OUTSIDE DIAMETER: 120.0 MILLIMETERS NOMINAL MM
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD ALL MATERIAL RESPONSES OVERALL
•
STYLE DESIGNATOR: GROOVED RACE SURFACE
TECHNICAL CHARACTERISTICS
ALIGNMENT TYPERIGID
OVERALL HEIGHT22.0 MILLIMETERS NOMINAL MM
BORE SMALLEST DIAMETER90.0 MILLIMETERS NOMINAL MM
MATERIALSTEEL COMP E51100 OR STEEL COMP E52100 OVERALL
THRUST DIRECTIONAL CAPABILITY DESIGNATIONSINGLE
OVERALL OUTSIDE DIAMETER120.0 MILLIMETERS NOMINAL MM
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD ALL MATERIAL RESPONSES OVERALL
STYLE DESIGNATORGROOVED RACE SURFACE
STANDARD TOLERANCE DESIGNATIONAFBMA STD TOLERANCE FOR THRUST BEARINGS
SURFACE FINISHGROUND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
8464InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
666157-164InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
8BCAWInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
53673C4InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
406718InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
001098 ITEM 2InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 291-8?
291-8 is a HEATING ELEMENT,ELECTRICAL,NONIM manufactured by Middle Atlantic Products.
What parts can replace 291-8?
There are 15 known substitutes for 291-8: 8464, 666157-164, 8BCAW and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 291-8?
291-8 is cataloged in the Federal Logistics Information System under NSN 3110-00-156-1908. This indicates validated use in U.S. government and defense supply chains.
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