NSN 3110-00-988-7656 HDB0047, HDB004-7, R1904SD620S1A3P1021L02EB
Product Details | ANNULAR BALL BEARING
3110-00-988-7656 A cylindrical device in which the inner or outer ring turns upon a single or double row of hardened balls which roll easily between the two rings, thus minimizing friction. For items with faces specially ground for duplex mounting see BEARING, BALL, DUPLEX. Excludes BEARING, BALL, AIRFRAME.
Part Alternates: HDB0047, HDB004-7, R1904SD620S1A3P1021L02EB, R-1904SD620S1A3P1021L02EB , 2-300-016-04, 2310174001, 2-310-174-001, 1904S302, 2300016, 2-300-016, 2-300-016-03, 2-310-174-01, 3110-00-988-7656, 00-988-7656, 3110009887656, 009887656, 230001604, 230001603, 231017401
Bearings | Bearings, Antifriction, Unmounted
| Supply Group (FSG) | NSN Assign. | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 31 | 01 JAN 1962 | 00-988-7656 | 00014 ( BEARING, BALL, ANNULAR ) |
Drawings & Photos | NSN 3110-00-988-7656
Demand History | NSN 3110-00-988-7656
| Part Number | Request Date | QTY | Origin |
|---|---|---|---|
| 1904S302 | 2025-05-148 | 30 | DIBBS |
| 2-300-016-03 | 2025-05-148 | 30 | DIBBS |
| 2-300-016-04 | 2025-05-148 | 30 | DIBBS |
| 2-310-174-01 | 2025-05-148 | 30 | DIBBS |
| HDB004-7 | 2025-05-148 | 30 | DIBBS |
| R-1904SD620S1A3P1021L02EB | 2025-05-148 | 30 | DIBBS |
| 1904S302 | 2024-06-182 | 49 | DIBBS |
| 2-300-016-03 | 2024-06-182 | 49 | DIBBS |
| 2-300-016-04 | 2024-06-182 | 49 | DIBBS |
| 2-310-174-01 | 2024-06-182 | 49 | DIBBS |
| HDB004-7 | 2024-06-182 | 49 | DIBBS |
| R-1904SD620S1A3P1021L02EB | 2024-06-182 | 49 | DIBBS |
| 2-300-016-03 | 2016-03-90 | 5 | KR |
| 3110-00-988-7656 | 2016-03-90 | 5 | MANUAL |
| 3110-00-988-7656 | 2013-09-254 | 13 | KR |
Cross Reference | NSN 3110-00-988-7656
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 1904S302 | 38443 | SKF USA INC DBA SKF AEROENGINE NORTH AMERICA |
| 2-300-016 | 99193 | HONEYWELL INTERNATIONAL INC. DBA HONEYWELL |
| 2-300-016-03 | 99193 | HONEYWELL INTERNATIONAL INC. DBA HONEYWELL |
| 2-300-016-04 | 99193 | HONEYWELL INTERNATIONAL INC. DBA HONEYWELL |
| 2-310-174-001 | 99193 | HONEYWELL INTERNATIONAL INC. DBA HONEYWELL |
| 2-310-174-01 | 99193 | HONEYWELL INTERNATIONAL INC. DBA HONEYWELL |
| HDB004-7 | 78118 | MPB CORPORATION DBA TIMKEN AEROSPACE |
| R-1904SD620S1A3P1021L02EB | 83086 | NEW HAMPSHIRE BALL BEARINGS, INC. DIV HITECH DIVISION |
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Related Products | NSN 3110-00-988-7656
Technical Data | NSN 3110-00-988-7656
| Characteristic | Specifications |
|---|---|
| MATERIAL | STEEL BALL STEEL INNER RING STEEL OUTER RING COPPER ALLOY RETAINER |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 6440 ASSN STD SINGLE MATERIAL RESPONSE BALL AMS 6440 ASSN STD SINGLE MATERIAL RESPONSE INNER RING AMS 6440 ASSN STD SINGLE MATERIAL RESPONSE OUTER RING M3900 91547 MFR REF SINGLE MATERIAL RESPONSE RETAINER |
| STYLE DESIGNATOR | 40A 4 POINT BALL CONTACT, SOLID INNER AND OUTER RINGS, NON-SEPARABLE |
| OVERALL WIDTH | 9.00 MILLIMETERS NOMINAL |
| BORE DIAMETER | 20.00 MILLIMETERS NOMINAL |
| OVERALL OUTSIDE DIAMETER | 37.00 MILLIMETERS NOMINAL |
| STANDARD TOLERANCE DESIGNATION | ABEC NO.3 |
| BORE SHAPE | STRAIGHT |
| SURFACE FINISH | GROUND |
| RETAINER FABRICATION METHOD | MACHINED |
| LOAD DIRECTION | RADIAL |
| INTERNAL CLEARANCE | 0.0040 INCHES MINIMUM AXIAL AND 0.0060 INCHES MAXIMUM AXIAL AND 0.0003 INCHES MINIMUM RADIAL AND 0.0009 INCHES MAXIMUM RADIAL |
| SPECIAL FEATURES | STABILIZED FOR OPERATION AT M65 DEG F TO P350 DEG F,RETAINER OD CONCENTRIC W/BORE OF INNER RING WITHIN 0.002IN. TO 0.005 IN. TIR,FACES OF INNER RING SQ W/BORE WITHIN 0.0004 IN. TIR,FACES OF OUTER RING SQ W/OD WITHIN 0.0004 IN. TIR,PARALLELISM OF OUTER AND INNER RING SIDES WITHIN 0.0004 IN. TIR,ROCKWELL HARDNESS RATING OF BALL 58.0 TO 62.0,INNER AND OUTER RINGS 58.0 TO 64.0 C SCALE,RETAINER 55.0 TO 80.0 B SCALE,INNER AND OUTER RING RACEWAYS 5 TO 8 UIN AA,BALLS 1 UIN AA,OD SURFACE OF OUTER RING 15 TO 20 UIN AA,BORE SURFACE OF INNER RING 16 TO 20 UIN AA,CAGE POCKETS AND RETAINER BORE SURFACE 30 TO 125 UIN AA,INNER RING LIPS 10 TO 20 UIN AA,THE -04 BEARING HAS A DIFFERENT STYLE OUTER RING THAN THE -03 AND -05 BEARING |
| TEST DATA DOCUMENT | P6903-91547 SPECIFICATION |
| MANUFACTURERS CODE | 99193 |
| MFR SOURCE CONTROLLING REFERENCE | 2-300-016 |
Restrictions/Controls & Freight Information | NSN 3110-00-988-7656
| Category | Code | Description |
|---|---|---|
| Shelf-Life Code: | 0 | Nondeteriorative |
| Hazardous Material Indicator Code | N | There is no data in the HMIS and the NSN is in an FSC not generally suspected of containing hazardous materials |
| Demilitarization Code: | A | Non-Munitions List Item/ Non-Strategic List Item - Demilitarization not required. |
| Controlled Inventory Item Code: | U | UNCLASSIFIED |
| Precious Metals Indicator Code: | A | Item does not contain precious metal |
| Criticality Code: | F | The item is an Aviation Critical Safety Item/Flight Safety Critical Aircraft Part ((ACSI/FSCAP). |
| Category | Code | Description |
|---|---|---|
| NMF Description | 114820 | BEARINGS/BUSHINGS NOI BALL/ROLLER |
| Less than car load rating | P | 77.5 |
| Less than truck load rating | P | 77.5 |
| Water commodity Code | 742 | unknown |
| Originating Activity Code | XX | |
| Air Dimension Code | A | Shipment is not a consolidation and does not exceed 72 inches in any dimension. |
| Air Commodity | V | Vehicles, machinery, shop and warehouse equipment and supplies, including special tools and equipment, ground servicing and special purpose vehicles, marine equipment and supplies, repair and maintenance parts for the above. |
| Air Special Handling | Z | No special handling required. |
| Special Handling Code | 9 | unknonwn |
| HAZMAT | ||
| Type of Cargo | Z | No special type of cargo code applicable |
Management | NSN 3110-00-988-7656
Army| Category | Code | Description |
|---|---|---|
| Materiel Category and Inventory Manager | H | Aircraft, Air Materiel |
| Appropriation and Budget Activity | 2 | Stock Fund Secondary Items |
| Management Inventory Segment | 2 | NONREPARABLE ITEMS (Exclusive of Insurance and Provisioning Items). This code will be used to identify items which are not reparable. |
| Specific Group/Generic Code | B | Rotary Wing Aircraft |
| Weapons Systems/End Item or Homogeneous Group | BL | CH-47 Turbine Engine |
| Accounting Requirements Code | X | Expendable item. An item of Army property coded with an ARC of ?X? in the AMDF. Expendable items require no formal accountability after issue from a stock record account. Commercial and fabricated items similar to items coded ?X? in the AMDF are considered expendable items. |
| Source of Supply | B17 | US Army Aviation and Missile Command (Air) ATTN: AMSMI-LC-MM-C Redstone Arsenal, AL 35898-5230 |
| Agency | DA | Department of the Army |
| Service Organization | A | U.S. Army |
| Reparability | Z | This is a nonreparable item. If condemned or economically unserviceable, then dispose at the level authorized replace the item. |
| Acquisition Advice Codes | M | RESTRICTED REQUISITIONS-MAJOR OVERHAUL (Service/Agency use only.) # Items (Assemblies and/or component parts) which for lack of specialized tools, test equipment, etc., can be used only by major overhaul activities. Base, post, camp or station activities will not requisition unless authorized to perform major overhaul function. |
| Controlled Item Code | U | UNCLASSIFIED |
| Shelf Life Code | 0 | Nondeteriorative |
| Purchasing | QTY UOM |
1 EA : Each |