LBB Ultra-Precision Gage Heads
LBB Rev. 3
www.meas-spec.com
2012-august
1/5
?   Spring and pneumatic extend versions
?   Linear ball bearing front end
?   Extremely long life cycle
?   0.000004 inch [0.1?/SPAN>m] repeatability
?   ?/SPAN>0.02 to ?/SPAN>0.2 inch [?/SPAN>0.5 to ?/SPAN>5mm] ranges
?   Replaceable tungsten carbide contact tip
?   Double shielded LVDT
?   Flexible cable, resistant to chemicals
?   Fluoroelastomer boot (Model dependant)
?   Selection of optional electrical connectors
DESCRIPTION
The Linear Ball Bearing (LBB) Ultra-Precision gage heads are dimensional gaging probes engineered for highly precise
and repeatable measurements in quality control and metrology applications. The linear ball bearing system within the gaging
probe reduces radial play to a minute level and minimizes friction for ultra-precise measurement.
The bearing assembly utilizes two circumferential rows of miniature balls. The balls ride on a non-rotating plunger. The
plunger is hardened to Rockwell 65, hard-chrome plated and precision ground for optimal repeatability and resistance to
brinelling. The contact end of the plunger has a removable tungsten carbide ball tip. Plunger and bearings are enclosed in a
cylindrical housing, hand-honed and fit to the ball bearing assembly. Precision fitting provides for exceptional repeatability.
With the bearings and housing matched in hardness, the plungers can better tolerate side loads for a longer life cycle.
A Linear Variable Differential Transformer (LVDT) is contained in the opposite end of the tubular housing. With no physical
contact between its core and coils, the LVDT produces a highly repeatable output voltage proportional to displacement.
LBB gage heads feature a unique two-piece construction and are reparable should either probe structure or cables become
damaged. A bend relief spring (on selected models) protects the cable at its exit. Positive mechanical stops prevent damage
to the LVDT from impacts at the end of the contact tip in cases of over-stroke.
Spring-extend LBB gage heads feature user adjustable pre-travel/over-travel settings. Air-extend, spring-retract units require
dry, oil-free air at 5 to 15PSI [0.34 to 1bar]; by varying air pressure, users can control the gaging force to ensure that the
probes do not damage finely finished surfaces or distort delicate parts.
Measurement Specialties, Inc. (NASDAQ MEAS) offers many other types of sensors and signal conditioners. Data sheets
can be downloaded from our web site at: http://www.meas-spec.com/datasheets.aspx
MEAS acquired Schaevitz Sensors and the Schaevitz
?/DIV>
trademark in 2000.
FEATURES
APPLICATIONS
?  0.000004" 0.10 m re eatabilit
?   Online inspection of automotive parts
?   Housing diameter options: Smooth 0.315 [8mm] &
3/8 9.5mm or threaded 3/8-40 UNS-2A
?   Process feedback for numerically-
controlled machine tools
?   Four electrical connector o tions cable end
?   Dimensional ins ection of recision arts
?   O tional contact ti s 4-48 UNF-2A threads onl  
?   Point-of-manufacture status of production
process standards
?   Ada ter rovided for radial cable exit Selected models
?   Compatible with all our si nal conditioners
?   Automated data collection for factor SPC
?   Calibration re ort su   lied with each unit
?   Robotics