Micrometer Head
Micrometer Heads SERIES 148 — Fine Spindle Feed of 0.1 mm/rev
Spindle Pitch
• Fine spindle feeding of just 0.1 mm/rev (one fifth compared with standard model). Suitable for extra-fine adjustment and positioning.
• External dimensions are compatible with standard 0.5 mm pitch heads. • Suitable for the fine feeding of precision stages on semiconductor equipment and optical-axis alignment device.
Pitch=0.1 mm
Pitch=0.5 mm
SPECIFICATIONS Metric Code No. Range (mm)
B
Typical Applications • Semiconductor-wafer positioning machinery and optical component alignment units, etc.
Graduation (mm)
Stem dia. (mm)
Spindle end
Spindle pitch (mm)
Maximum permissible error J MPE (µm)
Stem Plain
Special features
148-142-10 148-143-10 148-342-10 148-343-10 148-242-10 148-243-10
—
W/clamp nut
Spherical (SR4)
±2
9.5
Plain
Thicker & shorter thimble
0 - 6.5 0.002
• Precision X-Y table positioning
W/clamp nut
0.1
Plain Spherical (SR3) Plain Spherical (SR1.5)
6
W/clamp nut
Small thimble diameter
±5
148-244 148-245
0 - 5 0.004 3.5
W/clamp nut • Measuring face: Material/Alloy tool steel, Hardness/60 HRC or more, Lapped • Satin-chrome plated
• Precision adjustment of mirror in holder
DIMENSIONS
Plain Stem
Unit: mm
Precision adjustment of mirror in holder
Plain stem Spherical face
0 -0.009
Set screw
ø9.5
0
5
90 80 20 10 0
Sleeve marker
9.5
3.5
(17)
31.5
Comparison of Mounting Dimensions Between a Fine-pitch Head and a Standard-pitch Head at the Mid-range Travel Position.
23.5
(38)
148-142-10 Mass: 31 g
(55)
Stem Locknut
20.5
9.5
Scale: 3 mm position
6.5
(Operating range)
90 80 10 20 0
0
Fine-pitch head (spindle pitch: 0.1 mm)
3
3.5
Spherical face Stem locknut
Scale: 6.5 mm position
6.5
6.5
Set screw
0 -0.009
ø9.5
10 5 0
0 5
0
5
10 0 20 80 90
40 45
Standard pitch head (spindle pitch: 0.5 mm)
13
9.5
(Operating range)
Sleeve marker
20.5
Locknut M9.5 × 0.5
4
(58.5)
9.5
3.5
Note: While the fine-pitch micrometer head has a
(17)
31.5
measuring range of 6.5 mm, the standard head has a larger range of 13 mm. When replacing a standard head, the fine-pitch type can use the common range in the middle of the spindle travel. The standard and compact types of fine-pitch head are otherwise completely interchangeable.
23.5
(38)
• Fixture thickness: 6 mm 148-143-10 Mass: 34 g
( ): with spindle fully retracted.
B-100
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