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iNSTRUMENT SERIES LINEAR BEARINGS & SHAFTING
Inch Instrument Bearing
Inch Instrument Shafting

Instruement Precision Linear Bearings and Shafting PDF Print Friendly Page
Instrument
Linear Bearings
and Shafting PDF
INCH INSTRUMENT PRECISION LINEAR BEARINGS AND SHAFTING
Similar in construction to LBB linear bearings, Instrument Series Linear Bearings are small diameter, high precision bearings with stainless steel shells. When matched with Instrument Series Linear Shafting, ILBB Linear Bearings provide high performance with .0001 to .0003 inch clearances. ILBB Linear Bearings are used in light load, high precision applications where low friction guidance is required such as medical and semiconductor equipment.
INCH INSTRUMENT PRECISION CLOSED BEARINGS
  • Designed for use on an end supported PowerTrax™ HG “ISL” shafting.
  • Solid stainless steel shell, no seals.
  • Require .0001" clearance.
  • Matched bearing and shaft sets are available.
Nominal
Shaft Dia.
Part No. D L L1 L2 Weight
(lb.)
Normal Load
(lb.)
Max Load
(lb.)
1/8 ILBB-125 .3125/.3121 .500 .312 .030 .02 7 9
3/16 ILBB-187 .3750/.3746 .625 .375 .030 .04 9 11
1/4 ILBB-250 .5000/.4996 .875 .437 .040 .11 17 25

INCH INSTRUMENT PRECISIOn SHAFTING
  • For optimum performance, PowerTrax™ ILBB Instrument Bearings should be matched with PowerTrax™ HG “ISL” instrument shafting.
  • Material: 440C stainless steel
  • Hardness: Rc 55-60
  • Diameter Tolerance: .0001" for shafts thru 6" long
  • Finish: 2-4 microinch (rms)
  • Straightness: 0.001 per inch of length of the shaft.
Nominal
Shaft Dia.
Part No. Tolerances Class "I"
Diameter
(in.)
Maximum Length
(in.)
Minimum
Depth of Hardness
(in.)
Weight Per
Inch of Length
(lbs.)
1/8 ISL-125 .1248/.1247 12 .027 .004
3/16 ISL-187 .1873/.1872 12 .027 .008
1/4 ISL-250 .2498/.2497 12 .027 .014