Salient Characteristics Gearbox_0002.doc
DOC document 666 KB Posted
- Solicitation number
- W911QX23Q0141
About this file
This document outlines technical requirements for a federal contract to provide custom gears, shafts, and bearings. The contractor must design a gear system meeting specific load and bearing requirements, including equivalent radial loads, rotational speeds, and an L1 bearing life of 1% failure rate within 2500 service hours. Materials, dimensions, and interface standards are provided for gears, shafts, splines and bearings. The contractor must deliver two sets each of 24 gears, 18 shafts, and 36 bearings. The related solicitation is a small business set-aside issued by the Department of the Army to acquire these items for delivery to Aberdeen Proving Ground in Maryland.
View the file
Other files
| File | Type | Posted |
|---|---|---|
| Salient Characteristics Gearbox_0003.doc | DOC document | |
| Q and A W911QX23Q0141-0002.docx | DOCX document | |
| Q and A W911QX23Q0141.docx | DOCX document | |
| Provisions and Clauses Full-Text Attachment W911QX23Q0141-0001.docx | DOCX document | |
| Salient Characteristics Gearbox.doc | DOC document | |
| Provisions and Clauses Full-Text Attachment W911QX23Q0141.docx | DOCX document |
On GovTribe
Work with this file
- Download the original file
- Contacts named in this file
- Similar government files
- Ask GovTribe AI about this file
Text version
Salient Characteristics
Commercial Availability Certification:
I have evaluated the commercial marketplace and determined that all of the salient characteristics documented below are available in products/services offered in the commercial marketplace.
Signature (typed name): _Sangguk Kang______________________
Technical Point of Contact (TPOC) or Contracting Officer’s Representative (COR)
1. The Contractor shall provide custom gears, shafts, and bearings to the Army Research Directorate of the Army Research Laboratory in Building 4603, Aberdeen Proving Ground (APG), MD 21005. The gear arrangement is presented in Fig. 1 with the identifier. “g1” and “s1” represent “gear 1” and “shaft 1”, respectively.
Figure 1: Existing gear arrangement from engine side (position enforced)
2. The Contractor shall perform the engineering design to ensure the gear system meets the following gear mesh load requirements:
| Gear mesh pair |
| Boosting |
| Generating |
| Cranking |
| g1g2 |
| 218 N (Ncycles = 2x106) |
| 218 N (Ncycles = 1x107) |
| 2186 N (Ncycles = 1x104) |
0 N (Ncycles = 1x104)
| g2g3 |
| 218 N (Ncycles = 2x106) |
| 218 N (Ncycles = 1x107) |
| 2186 N (Ncycles = 1x104) |
0 N (Ncycles = 1x104)
| g4g5 |
| 419 N (Ncycles = 2x106) |
| 419 N (Ncycles = 1x107) |
| 4199 N (Ncycles = 1x104) |
0 N (Ncycles = 1x104)
| g5g6 |
| 419 N (Ncycles = 2x106) |
| 419 N (Ncycles = 1x107) |
| 0 N (Ncycles = 1x104) |
4199 N (Ncycles = 1x104)
| g7g8 |
| 218 N (Ncycles = 2x106) |
| 218 N (Ncycles = 1x107) |
| 0 N (Ncycles = 1x104) |
2186 N (Ncycles = 1x104)
| g8g9 |
| 218 N (Ncycles = 2x106) |
| 218 N (Ncycles = 1x107) |
| 0 N (Ncycles = 1x104) |
2186 N (Ncycles = 1x104)
| g10g11 |
| 8695 N (Ncycles = 2x106) |
| 6440 N (Ncycles = 1x107) |
| 30 N (Ncycles = 1x104) |
30 N (Ncycles = 1x104)
| g11g12 |
| 8695 N (Ncycles = 2x106) |
| 6440 N (Ncycles = 1x107) |
| 30 N (Ncycles = 1x104) |
30 N (Ncycles = 1x104)
3. The Contractor shall perform the engineering design to ensure the gear system meets the following bearing load and speed requirements:
Equivalent Radial Load, N (operational time fraction) & Rotational speed, rpm
| Side |
| Shaft # |
| Bearing # |
| Boosting |
| Generating |
| Cranking |
Prop-eller side (A)
| s1 |
| b1A |
| 109 N (25%) 20522 rpm |
(1968 hours) 109 N (70%) 20522 rpm (5512 hours) 1092 N (2.5%) 1026 rpm 0 N (2.5%) 1026 rpm (197 hours)
| s2 |
| b2A |
| 189 N (25%) 12757 rpm |
(2753 hours) 215 N (70%) 12757 rpm (7709 hours) 1895 N (2.5%) 638 rpm 0 N (2.5%) 638 rpm (275 hours)
| s3 |
| b3A |
| 284 N (25%) 10261 rpm |
(1165 hours) 284 N (70%) 10261 rpm (3262 hours) 2843 N (2.5%) 513 rpm 0 N (2.5%) 513 rpm (117 hours)
| s4 |
| b4A |
| 5793 N (25%) 4000 rpm |
(1100 hours) 4332 N (70%) 4000 rpm (3081 hours) 825 N (2.5%) 200 rpm 832 N (2.5%) 200 rpm (110 hours)
| s5 |
| b5A |
| 284 N (25%) 10261 rpm |
(1167 hours) 284 N (70%) 10261 rpm (3267 hours) 0 N (2.5%) 513 rpm 2839 N (2.5%) 513 rpm (116 hours)
| s6 |
| b6A |
| 215 N (25%) 12757 rpm |
(2400 hours) 189 N (70%) 12757 rpm (6721 hours) 0 N (2.5%) 638 rpm 2152 N (2.5%) 638 rpm (240 hours)
| s7 |
| b7A |
| 109 N (25%) 20522 rpm |
(1968 hours) 109 N (70%) 20522 rpm (5512 hours) 0 N (2.5%) 1026 rpm 1092 N (2.5%) 1026 rpm
| s8 |
| b8A |
| 9920 N (25%) 4143 rpm |
(835 hours) 7347 N (70%) 4143 rpm (2337 hours) 38 N (2.5%) 207 rpm 38 N (2.5%) 207 rpm (83 hours)
| s9 |
| b9A |
| 4347 N (5%) 2367 rpm |
6368 N (5%) 2367 rpm 4761 N (5%) 2367 rpm 5171 N (5%) 2367 rpm 2975 N (5%) 2367 rpm (1118 hours) 3220 N (30%) 2367 rpm 5283 N (10%) 2367 rpm 3829 N (10%) 2367 rpm 4205 N (10%) 2367 rpm 2105 N (10%) 2367 rpm (3131 hours) 15 N (2.5%) 118 rpm 15 N (2.5%) 118 rpm (112 hours)
| Engine side (B) |
| s1 |
| b1B |
| 109 N (25%) 20522 rpm |
(1698 hours) 109 N (70%) 20522 rpm (5512 hours) 1092 N (2.5%) 1026 rpm 0 N (2.5%) 1026 rpm
| s2 |
| b2B |
| 189 N (25%) 12757 rpm |
(2753 hours) 215 N (70%) 12757 rpm (7709 hours) 1895 N (2.5%) 638 rpm 0 N (2.5%) 638 rpm (275 hours)
| s3 |
| b3B |
| 324 N (25%) 10261 rpm |
(786 hours) 324 N (70%) 10261 rpm (2202 hours) 3240 N (2.5%) 513 rpm 0 N (2.5%) 513 rpm (78 hours)
| s4 |
| b4B |
| 2810 N (25%) 4000 rpm |
(1216 hours) 2251 N (70%) 4000 rpm (3405 hours) 3374 N (2.5%) 200 rpm 3378 N (2.5%) 200 rpm (121 hours)
| s5 |
| b5B |
| 324 N (25%) 10261 rpm |
(787 hours) 324 N (70%) 10261 rpm (2204 hours) 0 N (2.5%) 513 rpm 3238 N (2.5%) 513 rpm (78 hours)
| s6 |
| b6B |
| 215 N (25%) 12757 rpm |
(2400 hours) 189 N (70%) 12757 rpm (6721 hours) 0 N (2.5%) 638 rpm 2152 N (2.5%) 638 rpm (240 hours)
| s7 |
| b7B |
| 109 N (25%) 20522 rpm |
(1968 hours) 109 N (70%) 20522 rpm (5512 hours) 0 N (2.5%) 1026 rpm 1092 N (2.5%) 1026 rpm
| s8 |
| b8B |
| 5335 N (25%) 4143 rpm |
(687 hours) 3951 N (70%) 4143 rpm (1924 hours) 21 N (2.5%) 207 rpm 21 N (2.5%) 207 rpm (69 hours)
| s9 |
| b9B |
| 4348 N (5%) 2367 rpm |
2975 N (5%) 2367 rpm 5171 N (5%) 2367 rpm 4761 N (5%) 2367 rpm 6368 N (5%) 2367 rpm (2384 hours) 3220 N (30%) 2367 rpm 2105 N (10%) 2367 rpm 4205 N (10%) 2367 rpm 3829 N (10%) 2367 rpm 5283 N (10%) 2367 rpm (6671 hours) 15 N (2.5%) 118 rpm 15 N (2.5%) 118 rpm (238 hours)
4. The Contractor shall ensure the bearing system meets the L1 bearing life requirements (1% of bearing failure in 2500 service hours)
5. The Contractor shall provide the splined connection between g1 and s1 and between g9 and s7) following the DIN 5463 standard with Ød=11, ØD=14, b=3, and the number of splines=6. The splined length shall be at least 10 mm.
6. The Contractor shall provide the engine shaft (s4) input spline with twenty-three (23) tooth. The major diameter is 1 inch. The splined length shall be at least 30 mm.
7. The Contractor shall provide two (2) sets of the gears (g1 to g12), resulting in total of twenty-four (24) gears.
8. The Contractor shall provide two (2) sets of the shafts (s1 to s9), resulting in total of eighteen (18) shafts.
9. The Contractor shall provide two (2) sets of the bearing (b1A to b9A, and b1B to b9B), resulting in total of thirty-six (36) bearings.
10. The Contractor shall use 16NCD13 or similar material grades for gears.
11. The Contractor shall deliver all required items to APG, MD 21005. FOB Destination terms are preferred.
Contracting Officer:
Template last updated 07/28/2016
File details come from the government source that posted it. Updated .