Labmaster Universal Measuring Machine
 
 

Send me Pratt & Whitney
news and information.
 
Sitemap
Contact us

Pratt & Whitney LMU Bearing Measuring Instrument

The Labmaster Universal bearing measuring instrument can measure a wide range of anti-friction bearings including tapered bearings, needle bearings, ball bearings, spherical bearings, and cylindrical bearings.  A few of the most popular bearing characteristics that can be measured on the Pratt & Whitney Labmaster bearing measuring system include: 
 
  • Radial Internal Clearance (Radial Internal Play)
  • Axial Internal Clearance (Axial Internal Play / End Play)
  • Internal Diameter of Bearing (Inner Ring)
  • External Diameter of Bearing (Outer Ring)
  • Inner Raceway of Bearing
  • Outer Raceway of Bearing
  • Shield Thickness
  • Ball Bearing Diameter

LabMaster Universal® PDF
FREE LabMaster Universal® DVD
Leasing Information


Easy to use and the most accurate bearing measuring instrument on the market today, the P&W Labmaster Universal measures bearings used for the aerospace, automotive, and medical industry.  A popular add-on for the bearing remanufacture & repair industry is the axial internal clearance (axial play) and radial internal clearance (radial play) kits.    These accessories can measure bearing wear and provide important failure analysis. 


 

 

 
Features & Benefits of the LMU Radial Internal Clearance/Play Kit:
 
  • Differential Measurement
    Eliminates errors due to deflections of machine elements and errors due to variations in mechanical connections.
     
  • Floating Ring Design
    Flexure support allows 6 degrees of frictionless movement with zero looseness. The force application system is also frictionless. The absence of friction and looseness ensures repeatability. The floating ring design allows precise alignment of the bearing races, which reduces misalignment errors.
     
  • Horizontal Orientation
    Minimizes errors due to the bearing deforming under its own weight. Eliminates the need for the force system to compensate for bearing weight.
     
  • Concentrated Force Application
    Minimizes error due to ring deflection. Radial Play Kit includes force systems (load presets) to satisfy ABMA, ANSI, ISO, JIS, and DIN standards for ABEC ball bearings, RBEC roller bearings, etc.
     
  • Performance Highlights
    Highest accuracy, repeatability, and resolution on the market.
Gage Comparison:
"Other" Gage
 P&W Radial Internal Clearance Kit
Inner ring mounted on 3 Jaw chuck. If chuck is too tight then ring will deform. If chuck is too loose then gap will affect measurement. No radial loads are applied when mounting the bearing.
Single ended measurement will include errors due to machine element deflections, fixturing looseness, and air bearing variation. Differential measurement is unaffected by machine element deflections, fixturing looseness, or air bearing variation.
Large offset distance between the force application and reaction points causes bending of the bearing rings, which will add or subtract from the measurement.
 Minimal offset distance (< 0.125") between the force application and reaction points ensures minimal flexing of the bearing. A 0.125"offset will have 500X less deflection than a 1" offset.
No provision for precisely aligning the bearing races. Alignment will be affected by machine level and force application friction. The floating ring design allows precise alignment of the bearing races, minimizing errors due to misalignment.
Friction in the force system due to cylinder seals causes force variation. Frictionless force application minimizes force variation.
Friction between the force application V and the outer ring affects outer ring centering. Frictionless force application allows the outer ring to auto-center.
Vertical mounting of the bearing allows the ring to deform under its own weight, directly affecting the measurement. Horizontal mounting of the bearing minimizes ring deflection due to its own weight. Ring deflection is in a direction that does not directly affect the measurement.
Vertical mounting of the bearing means that the weight of the outer ring will add to the downward applied force and subtract from the upward applied force. Horizontal mounting of the bearing ensures that the bearing load is unaffected by the outer ring weight.
  More Dimensional Measuring Machines

Top
 
A2LA ScopePratt & Whitney Measurement Systems, Inc.
66 Douglas Street, Bloomfield, CT 06002-3619
TEL: (860) 286-8181 or 1-800-371-7174 FAX: (860) 286-7878
© Pratt & Whitney Measurement Systems, Inc.