GKN Sinter Metals reports on benefits of Powder Metallurgy transmission carriers

September 17, 2017

GKN Sinter Metals reports on benefits of Powder Metallurgy transmission carriers


GKN’s Sinter Metals has published an article on the development and increased performance offered by its Powder Metallurgy transmission carriers. The company has been producing PM carriers for planetary gear sets since the 1990s, over a period which has seen designs evolve from simple forms to complex systems with many functional features.

As CO2 reduction requirements put increasing pressure on the automotive industry, automakers are developing higher speed transmissions for improved efficiency and fuel economy, with 8-, 9- and 10-speed automatic transmissions becoming the standard. Due to its net shape capabilities, PM technology is a key enabler for complex transmission designs.

GKN’s steel PM carriers are designed to reduce machining chips and weight, while increasing part rigidity. The company’s designs eliminate the need for backing plates and one-way clutches, reducing the space and weight taken up by the carrier. During compaction, lubricating features are integrated into the carrier itself.


GKN Sinter Metals reports on benefits of Powder Metallurgy transmission carriers

GKN’s MPIF award-winning Planetary Carrier Assembly (Courtesy GKN Sinter Metals)


In June 2017, GKN Sinter Metals was awarded an MPIF award for its Planetary Carrier Assembly. The sinter-brazed copper-steel assembly, comprised of a cage and a flanged hub, goes into the new 10-speed transmission for the Ford F-150 pickup and requires only simple milling and turning operations to hold the tight tolerances on the bearing bores, pinion pin shaft holes, and thrust faces.

The company also stated that GKN’s proprietary high-performance aluminium MMC materials further reduce mass and inertia in its planetary carriers. The lower density of aluminium makes it possible to reduce mass by 60% from the equivalent steel part, while still allowing the part to perform at the working temperature of a modern automatic transmission.

Alan Taylor, Lightweight Technology, GKN Powder Metallurgy, explained, “The aluminium MMC is based on technology that has been used in aerospace for many years, but was developed to provide improved performance at lower cost than aerospace MMCs. This technology was introduced into the market place in mid-2016 and is serial production.”

GKN Sinter Metals expects CO2 reduction requirements to continue to dominate automakers’ production decisions. Therefore, a carrier’s ability to adapt to functionality and design requirements is crucial for optimal performance.

“In my opinion, our ability to understand these applications well enough to provide a customer-specific solution is what puts us on top in the carrier market,” concluded Paul Cook, Vice President Operations, Global Large Segment, GKN Sinter Metals.


In the latest issue of PM Review…

Download PDF

Extensive Powder Metallurgy industry news coverage, and the following exclusive deep-dive articles and reports:

  • Burgess-Norton and Amsted Automotive: How a legacy automotive supplier is growing with, not despite, electrification
  • Meeting sustainability demands in PM: High-temperature sintering of nickel- and copper-free powder mixtures for low alloyed PM parts
  • World PM2022: An overview of the status and trends in the global PM industry
  • A novel approach for the production of metal powders with tailored chemical compositions: Amazemet’s rePowder
  • Productivity, flexibility, reliability: SACMI’s new press technologies for the changing PM industry
  • Understanding the thermal properties of metal powders: Characterisation of powders using the Hot Disk technique
  • World PM2022: Views on the potential of Field Assisted Sintering for advanced materials

The latest news from the world of metal powders, delivered to your inbox

Don't miss any new issue of PM Review, and get the latest industry news. Sign up to our weekly newsletter.

Sign up

From the industry…

Discover our magazine archive…

The free-to-access PM Review magazine archive offers unparalleled insight into the world of Powder Metallurgy from a commercial and technological perspective through:

  • Reports on visits to leading PM part manufacturers, metal powder manufacturers and industry suppliers
  • Articles on technology and application trends
  • Information on materials developments
  • Reviews of key technical presentations from the international conference circuit
  • International industry news

All past issues are available to download as free PDFs or view in your browser.


Browse the archive


Looking for PM production equipment, metal powders, R&D support and more?

Discover suppliers of these and more in our
advertisers’ index and buyer’s guide, available in the back of PM Review magazine.

  • Powders & materials
  • Powder process, classification & analysis
  • PM products
  • Atomisers & powder production technology
  • Compaction presses, tooling & ancillaries
  • Sintering equipment & ancillaries
  • Post-processing
  • Consulting & toll sintering
Download PDF
Share via
Copy link