1221C0318 — ROLLER,LINEAR-ROTARY MOTION

✓ Government record, cited

— · BALL BEARING

PRODUCT OVERVIEW

1221C0318: ROLLER,LINEAR-ROTARY MOTION.

The ROLLER,LINEAR-ROTARY MOTION is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY, face_width: 1.870 INCHES NOMINAL IN, outside_diameter: 1.840 INCHES NOMINAL IN, special_features: 1.500 IN. RADIUS BY 1.000 IN.

W,MACHINED IN OD OF BODY IN, style_designator: PLAIN, bore_inside_diameter: 0.999 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN. This part is cataloged in the U.S. Government catalog under NSN 3120-01-360-1879, 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

1221C0318

NSN: 3120-01-360-1879
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 03538 — LOCKHEED MARTIN CORPORATION DIV RMS (USA)

SPECIFICATIONS

material	NICKEL ALLOY
face_width	1.870 INCHES NOMINAL IN
outside_diameter	1.840 INCHES NOMINAL IN
special_features	1.500 IN. RADIUS BY 1.000 IN. W,MACHINED IN OD OF BODY IN
style_designator	PLAIN
bore_inside_diameter	0.999 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN
casehardening_indicator	NOT CASEHARDENED
NSN	3120-01-360-1879

COMPONENT DIAGRAM

KEY FEATURES

•

STYLE DESIGNATOR: PLAIN

•

OUTSIDE DIAMETER: 1.840 INCHES NOMINAL IN

•

CASEHARDENING INDICATOR: NOT CASEHARDENED

•

MATERIAL: NICKEL ALLOY

•

FACE WIDTH: 1.870 INCHES NOMINAL IN

•

BORE INSIDE DIAMETER: 0.999 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN

TECHNICAL CHARACTERISTICS

STYLE DESIGNATOR	PLAIN
OUTSIDE DIAMETER	1.840 INCHES NOMINAL IN
CASEHARDENING INDICATOR	NOT CASEHARDENED
SPECIAL FEATURES	1.500 IN. RADIUS BY 1.000 IN. W,MACHINED IN OD OF BODY IN
MATERIAL	NICKEL ALLOY
FACE WIDTH	1.870 INCHES NOMINAL IN
BORE INSIDE DIAMETER	0.999 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN

OTHER ITEMS IN FSC 3120 — Bearings, Plain, Unmounted

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

3120-00-001-1288 3120-00-001-1835 3120-00-001-1838 3120-00-001-1928 3120-00-001-1934 3120-00-001-3933 3120-00-001-3937 3120-00-001-3938

SUBSTITUTES & CROSS-REFERENCES 2

1121C0318Reference document

Same NSN cross-reference

Reference document — Secondary reference

J-18839-1Reference document

Same NSN cross-reference

Reference document — Advisory reference — outside the item-of-supply concept

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 1221C0318?

1221C0318 is a ROLLER,LINEAR-ROTARY MOTION.

What parts can replace 1221C0318?

There are 2 known substitutes for 1221C0318: 1121C0318, J-18839-1. Substitute compatibility should be verified for your specific system.

What is the NSN for 1221C0318?

1221C0318 is cataloged in the U.S. Government catalog under NSN 3120-01-360-1879. This indicates validated use in U.S. government and defense supply chains.

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1221C0318 — ROLLER,LINEAR-ROTARY MOTION

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