MEASURING INSTRUMENTS CATALOG No.E2021
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B-92BMitutoyo reserves the right to change any or all aspects of any product specication, including prices, designs and service content, without notice.Micrometer HeadsSERIES 148 — Locking-screw Type • Locking screw provides secure locking at any position of the spindle. • Position of the locking screw is the same as the sleeve index line.Secure spindleLocking screwDIMENSIONSUnit: mmPlain StemPlain StemStem LocknutStem LocknutPlain stemSpherical face (SR3)148-222 Mass: 16 g3040(36.8)30.32.2ø9.3(11.3)ø7ø6 0 -0.008ø3.5SR36(8.5)154.6Locking screw4030Locknut M6×0.5(36.8)2.21530.3(8.5)7.53ø3.5(11.3)ø74.6ø6 0 -0.008SR3ø9.3Locking screwSpherical face (SR3) • Fixture thickness: 4 mm148-223 Mass: 17 g148-220 Mass: 16 g4030(36.8)30.32.2ø9.3(11.3)ø74.66(8.5)15ø3.5ø6 0 -0.008Locking screw 148-221 Mass: 17 g M6×0.5Locknut 3040(36.8)30.32.2ø9.315(8.5)7.53ø6 0 -0.008(11.3)ø74.6ø3.5Locking screw• Fixture thickness: 4 mmSPECIFICATIONSMetricInchOrder No.Range (mm)Graduation (mm)Stem dia. (mm)StemSpindle endGraduation featuresMaximum permissible error JMPE (µm)Order No.Range (in)Graduation (in)Stem dia. (in)StemSpindle endGraduation featuresMaximum permissible error JMPE (in)148-2200 - 6.50.016PlainFlatStandard±5148-2300 - 0.250.0010.25PlainFlatStandard±0.00025148-221W/clamp nut148-231W/clamp nut148-222PlainSpherical (SR3)148-232PlainSpherical (SR3)148-223W/clamp nut148-233W/clamp nut148-1500 - 139.5PlainFlat±2148-1600 - 0.50.375PlainFlat±0.0001148-151W/clamp nut148-161W/clamp nut148-152PlainSpherical (SR4)148-162PlainSpherical (SR4)148-153W/clamp nut148-163W/clamp nut148-3160 - 6.5PlainFlat148-3260 - 0.25PlainFlat148-317W/clamp nut148-327W/clamp nut148-318PlainSpherical (SR4)148-328PlainSpherical (SR4)148-319W/clamp nut148-329W/clamp nut( ): with spindle fully retracted.Stem locknutPlain stemSpherical faceStem locknutSpherical face

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