How to Use (Measuring Axial Circular Run-out)①Install a work on the rollers. To install the work, follow
steps ① through ③ in “Eccentricity Measurement”.

②Use the front and rear work retainers to anchor the positionof a work.
This product has a structure that subtly moves works as the mainrollers are turning. To prevent a work from moving, hold it with thefront and rear work retainers.

③ Height screw for
the rear retainer④ Position screw for
the rear retainer

Hold⑩ Work retainer(front)Work③Make contact with the probe on the work, and then turnthe handle to conduct a measurement.
Make contact with the probe of the measuring device at a rightangle to the end surface of the work. The measuring device
measures run-out from the end of a work as it turns (Figure 8).

⑨ Angle screw
for the front retainer

Figure 7

Measurement
deviceWork※In order to hold the measuring device in place when measuring
the axial circular run-out, we recommended using a holder,such as a magnet–base, instead of the carrier.

Right angle

ROG-221S
ROG-221SS
ROG-221LS
ROG-223S
ROG-223SS
ROG-223LS
ROG-351S
ROG-351SS
ROG-351LS
ROG-353S
ROG-353SS
ROG-353LS
ROG-101S
ROG-103S

Short base

Long baseClamp base

Roller type

WeightCarrier type()
Basic type no carrier
3.6kg
Slitted roller With shaft carrier
4.0kg
Linear carrier
4.3kg
Basic type (no carrier) 3.7kg
With shaft carrier
Flat roller
4.1kg
Linear carrier
4.4kg
Basic type (no carrier) 4.6kg
Slitted roller With shaft carrier
5.0kg
Linear carrier
5.3kg
Basic type (no carrier) 4.7kg
With shaft carrier
Flat roller
5.1kg
Linear carrier
5.4kg
Slitted roller
2.5kg
Basic type (no carrier)Flat roller
2.6kg⑳ Linear-type
Carrier

Grease nipple

Figure 9

Avoid moisture and direct sunlight. Keep anyone other than the productʼs
administrator away from the storage place.

② Screw for the top roller③ Height screw for the rear retainer

In this Manual,denotes an item which can resultin expansion damage,denotes a prohibition, anddenotes a mandatory item that must be observed.

⑪ Arm※This illustration shows the ROG-221SS.

⑫ Top roller⑬ Main rollers⑭ Screw to fix the arm block⑮ Instrument
Mounting Holes⑯ Knob to fix measuring
devices in place⑰ Clamp⑱ Fine-adjuster screw⑥ Handle⑦ Work retainer (rear)⑨ Angle screw for the front retainer⑩ Work retainer (front)

Common Specifications●Tolerance : Less 2 〜 3.5μm※ ref : φ20mm testing workpiece (our measured value)●Operating temperature range： 0 〜 40℃●Storage temperature range：-10 〜 50℃●With storage case

Measuring conditions●Out diameter of workpiece to be φ4 〜 30mm
（Precision roller for measurements under φ4ｍｍ optional）●Length of workpiece to be 5 〜 80mm
●Reference part of the workpiece must haveenough length to clamp to roller※To prevent measurement error, tip end for workpice to bemeasured on the main roller※Softer material such as nonferrous metals(aluminum) and plastic
will cause measurement errors depending on length and outside
diameter for flexurally

Wipe away any dirt from the main rollers, the top rollers, and thecarrier. Apply them with a rustproof treatment.

Put the product into the supplied container case and store it in adry, cool, and dark place.

① Arm block

SAFETY NOTICE⑧ Position screw for the front retainer

How to Maintain / Store after Use
The rollers and carrier are prone to rusting. Since rust on the rollers, inparticular, impacts on the overall accuracy it is important to apply them with anadequate amount of rustproof treatment.

■EXTERIOR FEATURES⑤ Grip●Lubricant Applied: ISO VG32-150●Recommended Frequency : Once every three months

Base type●For questions regarding this product, contact us or the seller.

Figure 8

A linear-type carrier requires periodic lubrication to maintainsmoothness of movement.
Use a grease gun to refill lubricating oil to the grease nippleof the carrier (Figure 9).

Specifications●When assigning or lending this product to a third party, makesure that it is accompanied by this manual.

④ Position screw for the rear retainer

Probe

Lubrication of the Linear-type Carrier

Model No.

Thank you for your purchase of the Run-out Gauge System. This precision jig product comes with an indicator and othermeasuring devices. These can be used to measure eccentricity (the run-out inside and outside of the diameter when turning thework) or the axial circular run-out (squareness) .
●For the safety of yourself and others, please read through thisUser Manual and follow its instructions carefully. Ensure that itis retained securely in a place where it can be readily accessed.

⑧ Position screw
for the front retainer

ROG-***SRUN-OUT GAUGE SYSTEM

Hold・Loosen the position and angle screws for the front retainer.
Adjust the position of the work retainer (front) so that it holds
the front end of the work, and then tighten the screws (Figure 7).

※By changing the number of washers at the bottom of the heightscrew for the rear retainer you can tune the height of the workretainer (rear). Insert one or two washers as necessary.

Model No.

Precision Jig for Eccentricity Measurement⑦ Work retainer(rear)

・Loosen the position screw for the rear retainer, adjust the positionof the work retainer (rear) so that it holds the rear end of thework, and then tighten the screw (Figure 7).

User Manual

For Operational Use

Niigata seiki Co., Ltd.
6-15-22, Tsukanome, Sanjo, Niigata, Japan, 955-0055
Tel. : +81-256-31-5660 Fax. : +81-256-39-7730

MAIL:intl.sales@niigataseiki.co.jp

I 203-K1 1510

①Arm block ……………… Supports the arm and the top roller.
②Screw for the top roller … Allows you to fix the vertical
position of the top roller.
③Height screw …………… Allows you to adjust the height of
the work retainer (rear) with thefor the rear retainer
number of washers.
④Position screw ………… Allows you to fix the horizontal
position of the work retainer (rear).
for the rear retainer⑤Grip …………………… Makes it easier to rotate the handle.
However it can cause the body ofthe device to shake, resulting inmeasurement errors. Attach if
necessary.
⑥Handle ………………… Allows you to rotate the main roller.
⑦Work retainer (rear) …… Fixes a work to a set position whenmeasuring the axial circular run-out(squareness).
⑧Position screw ………… Allows you to fix the horizontal
position of the work retainer (front).
for the front retainer⑨Angle screw …………… Allows you to fix the angle of thework retainer (front).
for the front retainer⑩Work retainer (front) …… Holds a work to prevent it frommoving during the measurement ofaxial circular run-out (squareness).

⑳ Carrier⑲ Platform⑪Arm …………………… Allows you to move the top roller
vertically to pinch a work.
⑫Top roller ……………… The upper roller that pinches the work.
⑬Main rollers …………… The lower rollers that pinch thework. A flat-type and slit-type areavailable.
⑭Screw to fix the arm block … Fixes the position of the arm block.
⑮Instrument Mounting Holes… φ6mm and φ8mm holes for mounting
stem of measuring instrument.
⑯Knob to fix measuring … Secures the device inserted into thedevices in place
Instrument Mounting Holes.
⑰Clamp ………………… Allows you to mount an indicator orother measuring device.
⑱Fine-adjuster screw …… Vertically adjusts the angle of themeasuring device to allow its probe
to come in contact with a work
horizontally.
⑲Platform ………………… A base made of steel. Long-type
platforms, or platforms without acarrier, have enough space tomount a magnet-base. This canthen be used for measurement.
⑳Carrier ………………… A moving part that holds measuring
devices. There are three types ofcarriers: shaft-type, linear-type, andcarrier-free-type.

Safety Precautions■The following set of indications classifies the degree of damage
that can arise from improper use of the product or a lack ofcompliance with the instructions.
This mark means that ignoring the instruction
Caution can cause injury or physical damage.
■Items to be observed are marked by the following symbols:

Read through this User Manual and follow the instructions.

・Any use of this product in a manner that is notdescribed in this manual may cause an accident.

・Any use of this product for purposes not described inthis manual may cause damage, abrasion of the
product, or unexpected accidents.

(front).

Insert the work retainer (front)
into the mounting hole on thebody, and then fix it in placewith the position screw for thefront retainer.
Do not allow the work retainer
to make contact with the roller.

③Attach the top roller.

Insert the top roller into themounting hole on the arm.
Tighten the position screw for
the top roller to fix it in place.

①Insert a grip into the holein the handle.
②Tighten the grip to affix it
to the handle.

Use a flat-blade screwdriver totighten and fix the grip in place.

⑥ Handle⑤ GripTighten with a flat-blade screwdriver.

Measurement
point

Measurement
point

Work

Work

⑬ Main rollers⑬ Main rollers
Adjust the height① Arm block

Center line

Loosen the position screw for the top roller and adjust the top
rollerʼs position. Tighten the screw to fix it at a position where it
can make stable contact with a work (Figure 4).

⑭ Screw to fix the arm block② Screw for
the top roller

Measurement device

Ins

ert

For devices without a carrier, use a holder such as amagnet-base to hold the measuring device in place.

Measuring Conditions
In order to measure a work, it must first satisfy the following conditions.
Failure to comply with the conditions may damage or deform the work or
the roller.

①The work is a cylinder with an outside diameter of φ4 to 30 mm,②The axis of the work is long enough to be pinched by※Depending on its outside diameter and length, any work madeof a soft material, such as nonferrous metal (i.e. aluminum) or
plastic, is likely to bend and cause measurement errors.

⑥Undertake measurement by turning the handle.

of a work:

The carrier of this product is designed to measure run-out at
the end of a work. If you would like to measure at a different
point, refer to “Using Your Magnet-Base”, described below.

⑫ Top roller

Work

Figure 4

Turning the handle turns the main rollers, causing the work toturn. The measuring device measures the run-out of a work
during rotation.

※Measuring eccentricity at a point other than at the end

Figure 3

Adjust the fore-and aft position

・Use the carrier to position the probe before
measurement. Note that it is impossible to move thecarrier while turning the roller.

⑯ Knob to fix measuring
devices in place

the roller, and③The work is made of a material that is resistant to
deformation.

⑬ Main rollers

・Move the carrier slowly. If you move it too fast, themeasuring device or the probe might hit a work,
causing inaccuracy.

Tighten⑫ Top rollerWork

contact with the probe of the measuring device affixed
to the work.
Have the contact with the probe set so that the direction of
measurement is at a right angle to the work. Turn thefine-adjuster screw to fine-adjust the angle of the measuring
device so that the probe is at a right angle (Figure 5).

Figure 2Work④Adjust the fore-and-aft position of the top roller.

Right angle

Adjust the angle
Measurement device

Work

１

Attaching the accessory grip onto the handle makes it easier to turn.
However, doing so causes a shift in the rotation support and makes it
impossible to rotate evenly. This also can causes the device body tovibrate, resulting in measurement errors.
We recommend rotating the handle manually while keeping an evendistance from the axis of rotation. However, if you do wish to use thegrip despite its restraints, please follow the instructions below to attach
it to the handle:

Figure 1

２

About the Grip

⑫ Top roller⑤Move the carrier back and forth in order to make

⑭ Screw to fix
the arm block

Mount an indicator or othermeasurement device.
Loosen the knob to fix ameasurement device onto theclamp and push it towards theclamp to align the mounting holes.
(Supports φ6mm and φ8mm stems.)
Insert the stem of the measuring
device into the hole and tighten theknob to hold the device in place.

Work

３

・The main roller, the top roller and the carrier are likely
to gather rust. It is therefore very important to rustproof
this product after use.

⑫ Top roller

１

After using, rustproof this product and store it ina dry place free from contact with direct sunlight.

① Arm block

Insert the arm block into thegroove on the body. Tighten
the screw to fix the arm blockin place.
① Arm blockdevice.

Install a work between the two main rollers.
Push down on the arm to elevate the top roller. Place the work
while the roller is elevated (Figure 1).
※The nearer to the roller the measurement point is, the higher
accuracy this device produces. Adjust the workʼs position sothat the measurement point is not too far from the rollers(Figure 2).
※The slit-type rollers allow the flange (step) to be relieved.
Align the workʼs flange with the groove of the rollers and set it.
Loosen the screw in order to fix the position of the arm blockand adjust its height. Adjust the vertical position of the top roller
so that the point of contact between the top roller and the work
is aligned with the center line of the work. Tighten the screw to
fix the arm block back into place (Figure 3).

⑪ Arm

Tighten④Attach the arm block.

⑤Attach a measurement①Install the body.

③Set up the top roller.

⑩ Work retainer (front)

２・Doing so can cause inaccuracy or damage to the product.
・Keep in mind that if you detach any of the components,
such as the main roller, the productʼs accuracy
assurance will become void.

TightenInsertDo not disassemble or modify this product.

Inse

rt

２

Observe the conditions required for measuring a work.

・Ignoring any of the condition may damage or deform the roller.

⑧ Position screw for
the front retainerrt・Shocks, including those suffered from falling or loading
heavy materials, can result in inaccuracy or damage tothe product, and therefore should be avoided.

⑪ Arm②Set a work on the main rollers.

⑦ Work retainer(rear)

Inse

Treat this device with care.

Push down

Install the body of the device onto a vibration-free, flat, andstable surface. This is necessary to achieve stablemeasurement results.

１

・Use of this product in an environment other than thosedescribed above can cause inaccuracy, damage to the
product, accidents, or injury.

②Attach the work retainer

Washers

１

Use this product only in environments that are:●Dry and free from contact with water.
●Not exposed to direct sunlight.
●Stable and vibration-free.
●Flat, without any unevenness in the surface.
●Not accessible by children or individuals other than the user.

Insert the height screw for therear retainer into the mounting
hole on the body, and thentighten it. Adjust the height of
the work retainer (rear) bychanging the number(thickness) of the washers.

２

Use this product only for the precision measurementof eccentricity or axial circular run-out.

(rear).

③ Height screw for
the rear retainer

２

Caution①Attach the work retainer

Tighten１

Denotes a “requirement”:
You MUST do it.

※The main rollers and top roller are designed to deliver a high level ofaccuracy. However, their construction also causes them to rust easily.
For this reason, you may not fail to wear gloves when handling them.

Before using, assemble the components into their correct positions.

Push

It is important to observe all of the following instructions.
In order to forestall damages to users, other persons, and property, theinstructions below must be strictly adhered to at all times in the mannerthat they are described.

Denotes a “prohibition”:
You MUST NOT do it.

How to Use (Eccentricity Measurement)

Setting of the Components before Use

Mainrollers

Turn

Figure 5⑳ Carrier⑱ Fine-adjuster screw

How to Use (Using Your Magnet-Base)
Measurement
deviceFor a no-carrier-type or wide-platform-type, it is possible to mount a retainer,such as a magnet-base, onto the base for measurement.

●Measuring a central part of a work:

It is possible to measure at any point other than at the end of awork. Put the probe so that it is making contact with a work at aright angle (the direction of measurement is right angle)(Figure 6).

●Mounting more than one measuring device to conduct
concurrent measurements of multiple points:

In addition to the supplied carrier, you can mount amagnet-base onto the space available on the wide-platform.
This enables you to conduct concurrent measurements ofmultiple points.

Right angle

Magnet-BaseWork
Center line
Probe
Work

Figure 6