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HR20685 ✓ Verified by PartsTable
— · BALL BEARING
WHAT YOU NEED TO KNOW
2RS = sealed for life, ZZ = shielded re-greaseable ABEC grade: higher = tighter tolerance
ABEC-1 standard, ABEC-7+ for precision spindles
PRODUCT OVERVIEW

The ROLLER,LINEAR-ROTARY MOTION is a the manufacturer industrial component. Key specifications include material: STEEL, face_width: 0.611 INCHES MINIMUM AND 0.616 INCHES MAXIMUM IN, bore_length: 0.969 INCHES NOMINAL IN, hub_diameter: 1.250 INCHES NOMINAL IN, outside_diameter: 2.495 INCHES MINIMUM AND 2.505 INCHES MAXIMUM IN, special_features: 0.125 IN. RADIUS HUB TO FACE IN.

This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-288-4852, 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
HR20685
NSN: 3120-00-288-4852
FSC: 3120
CAGE: 51228 — ECOLAIRE INC BALDWIN-HAMILTON CO DIV (USA)
SPECIFICATIONS
materialSTEEL
face_width0.611 INCHES MINIMUM AND 0.616 INCHES MAXIMUM IN
bore_length0.969 INCHES NOMINAL IN
hub_diameter1.250 INCHES NOMINAL IN
outside_diameter2.495 INCHES MINIMUM AND 2.505 INCHES MAXIMUM IN
special_features0.125 IN. RADIUS HUB TO FACE IN
style_designatorPLAIN, PROTRUDING HUBS
bore_inside_diameter0.9325 INCHES MINIMUM AND 0.9380 INCHES MAXIMUM IN
casehardening_indicatorCASEHARDENED
metallic_hardness_rating58.0 MINIMUM ROCKWELL C AND 60.0 MAXIMUM ROCKWELL C
chamfer/radius_of_inside_corner0.016 IN. BY 45 DEG IN
chamfer/radius_of_outside_corner0.031 IN. IN
NSN3120-00-288-4852
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: HR20685 · OEM ⚠ VERIFY BEFORE ORDERING ABEC grade: higher = tighter tolerance = higher cost. ABEC-1 is standard, ABEC-7+ for precision spindles. Open, shielded (ZZ), and sealed (2RS) versions have different max RPM ratings ✓ BROKER TIP 2RS = sealed for life (no maintenance). ZZ = shielded, re-greaseable. Open = must lubricate on install. Common interchange: 6205-2RS = 6205-2RSR = 6205-DDU (same bearing, different suffix) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
FACE WIDTH: 0.611 INCHES MINIMUM AND 0.616 INCHES MAXIMUM IN
•
HUB DIAMETER: 1.250 INCHES NOMINAL IN
•
MATERIAL: STEEL
•
CHAMFER/RADIUS OF OUTSIDE CORNER: 0.031 IN. IN
•
CHAMFER/RADIUS OF INSIDE CORNER: 0.016 IN. BY 45 DEG IN
•
OUTSIDE DIAMETER: 2.495 INCHES MINIMUM AND 2.505 INCHES MAXIMUM IN
•
CASEHARDENING INDICATOR: CASEHARDENED
TECHNICAL CHARACTERISTICS (FLIS)
FACE WIDTH0.611 INCHES MINIMUM AND 0.616 INCHES MAXIMUM IN
HUB DIAMETER1.250 INCHES NOMINAL IN
SPECIAL FEATURES0.125 IN. RADIUS HUB TO FACE IN
MATERIALSTEEL
CHAMFER/RADIUS OF OUTSIDE CORNER0.031 IN. IN
CHAMFER/RADIUS OF INSIDE CORNER0.016 IN. BY 45 DEG IN
OUTSIDE DIAMETER2.495 INCHES MINIMUM AND 2.505 INCHES MAXIMUM IN
CASEHARDENING INDICATORCASEHARDENED
METALLIC HARDNESS RATING58.0 MINIMUM ROCKWELL C AND 60.0 MAXIMUM ROCKWELL C
BORE LENGTH0.969 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
ANSI/NEMA PUB NO. CB1Interchangeable
interchangeable cross-reference
interchangeable
60114Interchangeable
interchangeable cross-reference
interchangeable
BA10004-333Interchangeable
interchangeable cross-reference
interchangeable
BA10004-33Interchangeable
interchangeable cross-reference
interchangeable
160-14Interchangeable
interchangeable cross-reference
interchangeable
M6000GInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is HR20685?
HR20685 is a ROLLER,LINEAR-ROTARY MOTION.
What parts can replace HR20685?
There are 16 known substitutes for HR20685: ANSI/NEMA PUB NO. CB1, 60114, BA10004-333 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for HR20685?
HR20685 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-288-4852. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026