CapabilitiesPrecision CNC Machining Services
For Aerospace Components
Custom Aerospace Engine
Component Concurrent
Engineering Services
Secondary Operations:
Specialty CMM Inspection &
Testing Capability
Example ProductsCNC Machining of 
Stainless Steel Seal Runners
for the Aerospace Industry
Fabrication & Assembly of
Turbine Exhaust Case Struts
CNC Machined
Titanium Shroud Sets
Custom CNC Machining of
Stator Assemblies
Custom Fabrication of Aluminum
Core Vane Assemblies
CNC Machining of
Titanium Sump Housing
CNC Milled Magnesium
Gearbox Housings & Cases

Custom CNC Milled Magnesium Gearbox Housings & Cases

Cover for Helicopter
Custom CNC Milling of Magnesium Gearbox Housing Unit
  306 Intermediate Case
CNC Milled Gearbox Housing Unit
  UL for Gearbox Housing & Cover
Custom Manufactured & Assembled Magnesium Gearbox Housing Cover


Using several CNC vertical machining centers, Birken Manufacturing machines many different magnesium gearbox housing and covers for an aircraft application. We then machined liners and install them during the assembly process. We paint the housing after dichromate. Based on customer supplied CAD drawings, the magnesium housing has a length of 28", a width of 18" and a height of 6". We maintained a tight tolerance on certain dimensions of .001". Prior to shipping the product, our quality assurance team conducted dimensional, CMM, borescope, pressure test and fluorescent penetrant inspections. To learn more about our products and services, please contact Birken Manufacturing or see below for details.

CNC Milled - Gearbox Housing Frame
CNC Milled - Gearbox Housing Cover

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