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Milwaukee® Spindle Shaft (For Use With D.I. Grinder)

Airgas Part #:MET38-50-5211

Manufacturer Part #:38-50-5211


$66.06 /Each
Each

Item Details

  • The Milwaukee 38-50-5211 is an Original Equipment Manufacturer (OEM) spindle shaft designed for high-velocity industrial power tools. It serves as the central rotary interface that secures the tool's collet workholder and mechanically links to the primary drive system gears. This component is designated as Item #32 in standard manufacturer schematics and is engineered for use with Double Insulated (D.I.) electric die grinders and straight grinders.

Features

  • OEM Tolerance Matching: Matches original machine tool balancing parameters to minimize hand-arm vibration (HAV)
  • True Concentricity: Machined for near-zero runout to prevent premature tooth chipping on carbide attachments
  • Dual Bearing Journal Configuration: Machined step shoulders for press-fitting of nose and rear spindle gear bearings
  • High Thermal Threshold: Designed for continuous production metal-deburring and weld-blending environments
  • Stress Fatigue Resistance: Engine-turned profiles to minimize stress-concentration nodes at shoulder transitions

Specifications

  • Manufacturer: Milwaukee Electric Tool Corporation
  • Manufacturer Part Number (MPN): 38-50-5211
  • Universal Product Code (UPC): 045242103096
  • Zoro Identifier: G7482273
  • PartSelect Number: PS10127646
  • ERP Identification Number: ERP10127646
  • Grainger Part Number Compatibility: 4Z818
  • Total Nominal Height/Length: 5.00 Inches (127.00 mm)
  • Maximum Outer Diameter/Width: 0.58 Inches (14.73 mm)
  • Net Product Shipping Weight: 0.16 lbs (2.56 oz / 0.072 kg)
  • Standard Packaging Envelope: 6.00" L x 1.00" W x 1.00" H
  • Base Material: High-tensile, case-hardened carbon steel alloy
  • Surface Treatment: Precision ground finish across bearing journals
  • Schematic Position: Item #32
  • Drive Source: 120V Armature (Item #20)
  • Drive Interface: Spindle Gear (Item #26)
  • Stabilization System: Dual-bearing containment (Ball Bearing Item #27 and Item #31)
  • Workholder Interface: Threaded for 1/4" Collet Nut (Item #33) and 1/4" Collet (Item #35)
  • Country of Origin: China
  • Regulatory Standards: UL 60745-1, CSA C22.2 No. 60745-1
  • Compatible Models (5192 Series): 5192 (Serial 669-33651), 5192 (Serial 669-8001), 5192 (Serial 669A), 5192 (Serial 669B), 5192 (Serial 669C), 5192 (Serial 669D), 5192 (Serial 669E)
  • Compatible Models (5192-2 Series): 5192-2 (Serial 669b), 5192-2 (Serial 669c)
  • Compatible Models (5194 Series): 5194 (Serial 803c), 5194 (Serial 803d), 5194 (Serial 803e), 5194 (Serial 803f)

Applications

  • Shipbuilding and Marine Fabrication: High-speed grinding of structural weld beads and beveling hull plates
  • Foundries and Casting Houses: Removal of parting lines, flashing, and risers from raw metal castings
  • Pipeline Infrastructure: Internal and external pipe-weld preparation and slag clearing
  • Heavy Rail Maintenance: Profiling welded rail joints and grinding frog switching points

Product Attributes

Product Type

» Spindle Shaft