Part Details | AIRFRAME BALL BEARING
3110-00-977-8704 A cylindrical item in which the inner or outer ring turns upon row(s) of hardened BALL, BEARING which roll on a raceway, thus minimizing friction. These items are characterized by their noncorrosive qualities, lightness of weight, inch dimensions rather than metric, inner rings generally projecting beyond the faces of the outer ring, or a very narrow width inner ring having an outside diameter slightly larger than the bore diameter. Designed primarily for use in aircraft assemblies, such as control systems and surfaces of aircraft. Excludes BEARING, BALL, ANNULAR.
Alternate Parts: C525DSP4, NMBDSP4525, NMBDSP4-525, MDSP4E9105, MDSP47, MDSP-4-7, MDSP4E9105, 3110-00-977-8704, 00-977-8704, 3110009778704, 009778704
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 31 | OCT 12, 1966 | 00-977-8704 | 00041 ( BEARING, BALL, AIRFRAME ) |
REFERENCE DRAWINGS & PICTURES
DOUBLE ROW, SELF ALIGNING
Cross Reference | NSN 3110-00-977-8704
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| C525DSP4 | 81755 | LOCKHEED MARTIN CORPORATIONDBA LOCKHEED MARTIN AERONAUTICS |
| NMBDSP4-525 | 83086 | NEW HAMPSHIRE BALL BEARINGS, INC.DIV HITECH DIVISION |
| MDSP4E9105 | 3NPS1 | RBC AIRCRAFT PRODUCTS, INC. |
| MDSP-4-7 | 38443 | SKF USA INC.DBA SKF AEROENGINE NORTH AMERICA |
| MDSP4E9105 | 21335 | TIMKEN COMPANY, THEDIV TIMKEN AEROSPACE |
Technical Data | NSN 3110-00-977-8704
| Characteristic | Specifications |
|---|---|
| STYLE DESIGNATOR | DOUBLE ROW, SELF ALIGNING |
| BORE DIAMETER | 0.2498 INCHES MINIMUM AND 0.2500 INCHES MAXIMUM |
| OVERALL OUTSIDE DIAMETER | 0.9009 INCHES MINIMUM AND 0.9014 INCHES MAXIMUM |
| OUTER RING WIDTH | 0.4640 INCHES NOMINAL |
| INNER RING WIDTH | 0.6820 INCHES MINIMUM AND 0.6870 INCHES MAXIMUM |
| LUBRICATION MATERIAL | GREASE |
| LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATION | MIL-G-23827 MIL SPEC SINGLE MATERIAL RESPONSE |
| SEAL QUANTITY | 2 |
| BEARING SEAL TYPE | CONTACT |
| ALIGNMENT TYPE | SELF-ALIGNING |
| SELF-ALIGNMENT LOCATION | INTERNAL |
| LOAD DIRECTION | RADIAL |
| SPECIAL FEATURES | 10 DEG SELF-ALIGNMENT IN EITHER DIRECTION; RADIAL CLEARANCE 0.0004 IN. MAX; CONTROLLED STARTING AND ALIGNMENT TORQUE; LUBE WITH 0.24 MIN TO 0.30 MAX GMS OF SPECIFIED GREASE; SEALS TO BE SANDWICH TYPE 1C STEEL WITH POLYTETRAFLUOROETHYLENE SEAL RING; RINGS HEAT STABILIZED AT 300 DEG F AND 0.4640 IN. MAX TO 0.4590 IN . MAX WITH OUTER RING TOLERANCE |