Niigata seiki MC122-25C Instruction Manual

INSTRUCTION MANUAL
PRECISION OUTSIDE COUNT MICROMETER
MEASURING INSTRUMENT
Thank you for purchasing the Niigata Seiki COUNT MICROMETER.
This precision gauge measures outside dimension of object placed between the Anvil and Spindle.
●For safe and proper use of this product, please read this instruction manual before use and follow the procedures
described. Please keep manual where it is accessible to user for future reference.
●Keep this manual with the instrument if transferred or leased to a third party.
●For inquiries about this product, please contact dealer or Niigata Seiki.
■ PART IDENTIFICATION
Anvil
（Fixed Side）
0-Point
Meas.Surfaces
Adj. Hole
（Carbide Tips）
【REAR】
【ACCS.】
Calibration Std.
（※For MC122-50C only）
Spanner
SPECIFICATIONS
Meas.Range Resolution Maximum permissible
Model No. （mm） （mm）
MC122-25C 0〜 25 0.01
25 〜 50
MC122-50C 0.01
HOW TO USE
ADJUSTING SLEEVE/SPINDLE ZERO SETTING
①Remove any grease or dust from the measuring surfaces using a
clean cloth, such as a lens cleaning cloth.
Make sure no foreign matter is adhered to the measuring surfaces.
②With Spindle Clamp loose, turn until measuring surfaces touch.
Turn until Ratchet Stop clicks 1-3 times. （ Fig.1）
※
For MC122-50C, place the provided Calibration Standard between the
Measuring Surfaces.
③If the zero line on the Thimble lines up with the line on the Sleeve, then
the origin is set. （ Fig.2）
If they do not line up, adjust the zero-point according to the procedure
below.
1. Tighten Spindle Clamp to lock Spindle.
2. Insert the spanner into 0-point Adjustment Hole on rear of Sleeve.
3. Use spanner to rotate Sleeve to align the 0-Point lines. （ Fig.3）
Model
MC122-25C/50C＜comb＞
No.
Clamp Sleeve
Spindle
Frame
5
0
0
45
3
【FRONT】
0 5 0 2
1
mm
Scale
Counter Cover Plate
Counter
Thermal Protection Cover
※Model MC122-25C shown
FEATURES
●Mechanical digit counter for quick
Weight
（ µm ） （ ）
g and error-free reading
error
●Carbide measuring faces
4 220
●With ratchet stop
●With thermal protection cover
4 300
Clamp
Meas. surfaces touch
3
0 0 0 2
1
mm
Match origin lines
3
0 0 0 2
1
mm
Rotate until origins match
１
０ ０ ０ ０
COUNTER DISPLAY SETTING
Gauge includes a Mechanical Counter for use as a quick reference
display in addition to the measurement shown conventionally on the
Sleeve Scale. Please note the following points about the measurement
displayed on the Mechanical Counter:
1. Use the reading from the Mechanical Counter only as a guide.
Since the Counter is a gear driven mechanism, there is some
backlash error and it will not necessarily match the reading on the
Sleeve/Thimble. When there is a discrepancy, please treat the
measurement shown on the Sleeve Scale as the correct value.
※The specifications listed for this product are for the measurement displayed
on the Sleeve Scale. The Counter reading is only to be used as a guide.
2. In the unlikely event that the Counter and Scale readings deviate
significantly, use the following procedure to adjust the Counter display.
Please note, before adjustment check that the Sleeve/Thimble zero
Thimble
setting is correct.
※For MC122-50C, use the provided Calibration Standard between the
Measuring Surfaces.
①Using a precision ○ ＋ type screwdriver, remove the two screws
securing the Counter Cover Plate, and then the two additional
screws holding the Counter Module in place.（Fig.4）
Ratchet Stop
②Remove the Counter for access, and rotate the gear to adjust. Set the
counter to 0.02〜0.03 above the reference value.（Fig.5）
③Hold the Counter Module by the outer frame without touching the
counter dials or gears, and replace the Module into the Micrometer
body.（Fig.6）
※If you touch the counter dials or gears the value may change when
being inserted.
④Replace the Counter Module screws to secure, and then replace the
Counter Cover Plate and screws.
OPERATION
①Use a lens cleaning cloth or similar to clean the Anvil and Spindle of
any grease or debris.
②Loosen the Clamp and place the workpiece between the Measuring
Surfaces.
③Rotate the Thimble using the Ratchet Stop until the workpiece contacts
the Measurement Surfaces and the Ratchet clicks 1〜3 times. （Fig.7）
④A rough reading is displayed on the Counter display.
※For a precise measurement please read the value shown on the
Sleeve/Thimble Scale. （ Fig.8）
"Click Click"
SAFETY
Always follow the procedures specified below in order to prevent harm to
yourself or others, and to prevent damage to property.
Ratchet Stop
Fi g. １
CAUTION
●Always clean measuring surfaces with soft cloth before use.
●Do not turn spindle more than 3mm above upper measurement range.
●When turning Thimble, be gentle and do not apply force. High force on Thimble will
cause inaccuracy.
●This is a precision instrument, handle with care. Do not drop or subject to
Thimble
excessive forces.
●Keep instrument away from direct sunlight or high temperatures such as in a car,
Fi g. ２
or near a stove or heat source.
●Do not expose to water or oils.
●Do not disassemble or modify.
５
０
●After use, remove any chips or debris using a soft cloth and take appropriate
４ ５
rust-preventive measures. Keep out of reach of children.
４ ０
●Please do not use organic solvents to clean the body of the instrument.
●Only use as directed. Improper use may cause accident or injury.
Spanner ※If problem persists, or if you have any questions, please contact distributor.
※Please note, manufacturer is unable to respond to inquires or provide service directly.
Fi g. ３
Please contact distributor.
PLEASE OBSERVE
Indicates risk of personal injury or property damage
if not followed.
Cover Plate
Screws
Cover Plate
Remove
Counter
Module Screws
Fi g. ４
Rotate the gear to set the
reference value:
（MC122-25C ： 0000）
（MC122-50C ： 2500） Gear
Set counter to 0002〜0003
above ref. value.
Fi g. ５
Counter Module
Hold by outer frame.
５
０
１ １ １ ３
０ ０ ０ ２
９ ９ ９ １
４ ５
４ ０
Fi g. ６
Workpiece
"Click Click"
8
2
1 8 7
6
mm
Ratchet Stop
Fi g. ７
１ ２． ５
Sleeve Reading：
． ３７
Thimble Reading：
：１ ２． ８７ ( mm )
Measurement
Fi g. ８
Niigata Seiki Co., Ltd.
5-3-14, Tsukanome, Sanjo, Niigata, Japan, 955-0055
Tel. : +81-256-33-5522 Fax. : +81-256-33-5518
MAIL intl.sales@niigataseiki.co.jp
URL http://www.niigataseiki.co.jp