MAGNETIC BASE SERIES
Model Number Guide

SB-6C
SB-6B
SB-80P
SB-25M
SB-80F
SB-100G
MB-7
SB-6C

SB-80F

SB-6B

SB-25M

SB-100G

SB-80P

MB-7

INSTRUCTION MANUAL
Thank you for purchasing the Niigata Seiki Magnetic Base.
Please read this manual thoroughly before use, and keep with product for future reference.

1 SAFETY WARNINGS⑴ Strong magnetic fields are present.

●Keep sensitive equipment, such as watches or personal computers from product as it may cause harm.
●Pacemaker wearers - Tool contains strong magnetic field, do not handle.

⑵ Magnetic field creates strong forces.

●When brought close to material such as steel plate, magnetic forces can create a sudden attraction with potential for injury tofingers and hands. Wear gloves when handling.

●Make sure ON/OFF Lever is in OFF position before bringing close to steel or iron.

⑶ Force of attraction will vary.

●Please note that the attraction force is reduced for the following conditions:・If target surface is thin.
・If target material is not mild steel.
・If surface is uneven, painted, or dirty.
●Magnet force required to prevent sliding is much higher. Extra care is required for use on vertical surfaces.
●Surface that are vibrating or slippery will make it easier for magnet to peel off.

⑷ Please check for sufficient holding force.

●Before use, always test magnet on target surface to make sure the attractive force is sufficient.

⑸ Support the tool when operating the ON/OFF Lever.

●Caution: accidental switching of ON/OFF Lever may cause tool to fall or a dangerous condition. Always support the tool when

operating the ON/OFF Lever.

⑹ Use care when storing magnetic tool.

●Store with ON/OFF Lever in the OFF position to prevent accident caused by inadvertent attraction if brought near a metal object

during storage.

⑺ This product is designed for industrial use.

●This is a high power tool designed for use in industrial applications. If used in office or residential environment, please use caution.

２ SPECIFICATIONS
Dial Gauge
Mounting

MagneticForce(approx.)Base
Dimensions
W×D×Hmm

Main Post
φ×L mm

φ6.0mm/φ8.0mm/Lugged800 N(180 lb)

50×60×55

12×178

10×165

M81500Thick Post

φ6.0mm/φ8.0mm/Lugged

800 N(180 lb)

50×60×55

14×181

12×165M8

1500

SB−80F

Flexible(w/ Fine adj.)

φ6.0mm/φ8.0mm/Dovetail

800 N(180 lb)

50×60×55

16×340M8

1300

SB−25M

Mini

φ6.0mm/

250 N(55 lb)30×35×35

7×54

M5

270

φ6.0mm/φ8.0mm/Dovetail

1000 N(225 lb)

50×75×55

145×125×50

M8

1700

φ6.0mm/φ8.0mm/Dovetail

250 N(55 lb)30×35×35

M5550

Model No.

Features

SB−6C

Standard

SB−6B

w/ Fine adjust

SB−80P

Lock
SB−100G (Centralw/ Fine adj.)

MB−7

Mini Lock

Please Note：Mini-Type Magnetic Base may
not be strong enough to support a large DialGauge. When Using a Mini-Type Base, pleasecheck to make sure attractive force is sufficient tosupport the Gauge. If force is not strong enough,Base may fall off unexpectedly causing injury orequipment damage.

ArmMain Post Weight(g)φ×L mm Thread Size

L1 × L2 × L3

(refer to illust below)
L1 × L2

58×64(refer to illust below)

L2

L3L2

L1

L115

18

SB-100G

MB-7

3 PARTS IDENTIFICATION
Example：SB-80P

SB-80F, SB-100G, MB-7
Clamp Detail

ArmAdapter PinPost Clamp Knob
Main Post

BaseFine Adjust Knob

Gauge Clamp Knob
Gauge Stem HoleGauge Clamp
ON/OFF Lever

DovetailGrooveGauge ClampKnob※Gauge Stem Hole issupplied with a bushing foruse with Gauges that have
φ6mm stem. Please use
as required to fit theGauge Stem.

4 HOW TO USE
1 For mounting a Dial Gauge or instrument with a compatible mount. (Refer to Specifications column: “DialGauge Mounting” in Section 2.) With magnet ON/OFF Lever, for positioning and removal.

※For Lug-Type Dial Gauge, (SB-80P/SB-6B) ⇒ refer to 2 below.
※For Stem mounting of Dial Gauge ⇒ refer to 3 below.
※For Dovetail mounted indicator, (SB-80F/SB-100G/MB-7) ⇒ refer to 4 below.

2 For Installing Lug-Type Dial Gauge

Lug Hole

Mount the Lug to the threaded post of
the Adapter Pin, and secure with the nut.

3 For Mounting the Dial Gauge by the Stem
※Please do not tighten the Gauge Clamp too strongly.

【Mounting Ex.1】※Loosen the Gauge Clamp
Knob, insert the Gauge andsecure Clamp on the Stem.

※Clamp can be secured
anywhere along the Stem.

Note)
Do not over tighten.

Clamp region【Mounting Ex.2】

Caution:※The Adapter Pin Ⓐ is removed andthe Dial Gauge is inserted in its place.
The Gauge Clamp Knob is used tosecure the Gauge.

Only clamp on the Clamp
Region of the Stem. Clamping
on any other area will damage
the Dial Gauge.

※Setup as shown, tighten theGauge Clamp Knob tosecure.

ⒶCaution:
Only clamp on the Clamp
Region of the Stem. Clamping
on any other area will damage
the Dial Gauge.

4 For Mounting an Indicator Gauge using the DovetailSecure by tightening theGauge Clamp Knob.

Clamp regionClamp region
Dovetail Groove

After mounting the measuring instrument, adjust theMain Post and Arm to desired position by loosening
and adjusting the clamps.

5 For SB-6C/SB-6B/SB-80P/SB-25M【Ex: SB-6C】※SB-6C/SB-6B/SB-80P/SB-25M ⇒ refer to 5 for adjustment
procedure.
※SB-100G/MB-7 ⇒ refer to 6 for adjustment procedure.
※SB-80F ⇒ refer to 7 for adjustment procedure.

Loosen the Post Clamp
Knob to adjust theposition as required.

Post Clamp Knob

6 For SB-100G/MB-7
Ex：SB-100G

7 For SB-80F

Lock Knob

Loosen※Upon delivery, adjustment will
be loose and Lock Lever will
not function. Please tighten
adjuster as required for
lockable position
before use.

Tighten
When the Lock Knob isloose, all moving parts
can be adjusted to thedesired position. Once
position is set, tighten theknob to secure.
※When locked, do not
attempt to move theMain Post. If forced,the connection will
become loose andLock Knob will nolonger function.

Lock Nut※These arefactory adjusted
and sealed.
Do not force
dis-assembly.

Tension Adjuster
Flexible Post

Lock Lever

Push down on Lock Lever to release
the Flexible Post. Tension can be
adjusted in this state by turning theadjuster. Turn as shown to loosen ortighten; when released, it should be
moderately tight. Set the desired
position and firmly push up on Lock
Lever to secure.

LockRelease

8 Final step - Fine Adjust. (SB-6B/SB-100G/SB-80F)
Fine-tune the position as shown in the diagrams below.

SB-6B Fine Adjust

SB-100G/SB-80F Fine Adjust
Fine Adjust Knob

Fine Adjust Knob

By turning the Knob right or left, you can change
the angle of the Arm tip.

By turning the Knob right or left, you can change
the angle of the Clamp tip.

5 STORAGE●Strong magnetic fields are present.

・Store in the OFF position. Storage in ON position may cause accident by inadvertent attraction if brought near a metal object
during storage.

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
URL http://www.niigataseiki.co.jp

I287-K 1601