NOS HYATT 52848 Split Cylindrical Roller Bearing Brass Cage 3400-539007 SEALED

Offered for sale is an original New Old Stock Hyatt split cylindrical retainer & roller retainer assembly bearing 04-D, preserved and sealed (never opened) in military packaging since 1954.

This is not a complete bearing with races — this is the split roller cage assembly, designed to run between hardened inner and outer races in large industrial machine tools.

Stamped and packaged under:

• Government Stock No: 3400-539007
• Manufacturer: Hyatt
• Part No: 52848 AN-C-124
• Military Spec Packaging: MIL-B-131B Class 1
• Preserved: January 1954
• Re-inspection: November 1959

Federal Supply Class 3400 indicates use in metalworking machinery (lathes, boring mills, milling machines, etc.).

Approximate Dimensions:

Inside Diameter: ~6.5"

Outside Diameter: ~8.5"

Width: ~0.41"

Split two-piece design

Cylindrical rollers in brass cage

(Please verify dimensions for your application.)

Application:

Likely used in:

Large engine lathe headstock assemblies

Horizontal boring mill spindle supports

Rotary tables

Gear cutting machinery

1940s–1960s heavy industrial equipment

This is a service replacement roller cage assembly, not a standard catalog bearing.