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HMC BS/OPM 12.5 HA Durability – 300 Hr Photos

HMC BS/OPM 12.5 HA Durability – 300 Hr Photos. 29 th December 2003. Introduction. First durability test carried out on 12.5° helix angle gears. Gears: Ground, un-heatreated prototypes from Delta. Gear 1: #13 (installed run-out 0.004mm). Gear 2: #2 (installed run-out 0.004mm). Module:

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HMC BS/OPM 12.5 HA Durability – 300 Hr Photos

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  1. HMC BS/OPM12.5 HA Durability – 300 Hr Photos 29th December 2003

  2. Introduction • First durability test carried out on 12.5° helix angle gears. • Gears: • Ground, un-heatreated prototypes from Delta. • Gear 1: #13 (installed run-out 0.004mm). • Gear 2: #2 (installed run-out 0.004mm). • Module: • 2.4L module “CTI”. P2 module built at Fremont Production site. • Input gear backlash: 0.027mm. • Thrust End Play (TEP): 0.108mm. • Transfer gear backlash: 0.070mm.

  3. Test Conditions • ESP 002269 rev J test 2 (Shaft Durability) test conditions followed. • 320 Hr Durability test: • 300 Hrs @ 6000 ERPM • 20 Hrs @ 6600 ERPM • Oil: • SAE 5W20 @ 140°C • Test Stand: • BSM Test Stand 1.

  4. Gear 1 – Input Shaft

  5. Gear 2 – Drive Shaft

  6. Shaft Rear Bearings

  7. Upper & Lower Hsgs Upper Hsg Lower Hsg

  8. Lower Hsg Rear Drive Rear Driven Front Drive Front Driven

  9. Upper Hsg Rear Driven Rear Drive Front Driven Front Drive

  10. Lwr Hsg – Rear Driven Shaft Bearing Rear Driven shaft bearings display fatigue failure. Failure seen previously on durability tests when A515 Bearing material was used. Change to A590 passed Shaft durability test without fatigue damage. Need to confirm material on these bearings SPN011342.

  11. Upper Hsg – Rear Driven Shaft Bearing

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