GRS MicroBlock Instructions Manual

TM

MicroBlock Ball Vise For Engraving and Jewelry Making

INSTRUCTIONS • #003-683 & #003-684

The GRS MicroBlock will provide many
years of trouble-free service. It is extremely
rugged in construction, yet is relatively
simple and easy to maintain. Required
lubrication is minimal.

The jaws are drilled to accept engraving
block attachments. The MicroBlock
includes six socket head screws,
which can be used to secure special
items or fixtures. GRS offers the 520
Attachment Set (#003-520) that
includes storage for the pins that come
with the block.

Maintenance

Based on usage, open jaws fully and clean dirt and metal pieces from
the threads. After cleaning, apply a small amount of light oil to threads.

Ball Swivel
Tension Screw

Jaw Thread Replacement

Overtightening the jaws will cause wear and damage to the threads.
If jaws become loose, replace with kit #003-629. Remove the jaws by
opening them as wide as possible until they come off the end of the jaw
screw (FIG. 1). The jaw thread pin is located on the underside of each
jaw. NOTE: Before removing pins, locate the one with the “L”. This is
the left hand thread pin and will need to be replaced with the same.
Apply a small amount of synthetic grease (included in kit) to the O-ring
and jaw screw before installing them. Lift the jaw screw out of the yoke
and replace it. Note which side the left hand thread is on. Grease the
threads and yoke well.

Start the jaw threads at the same time when replacing them (FIG. 2).
Hold each jaw in position and turn the jaw screw to close them. Either a
large rubber band or a second person is useful to hold the jaws against
the thread while the jaw screw is turned. If the jaws don’t meet at the
same time in the center, remove them and try starting the threads at the
same time again.

Rotational Lock Replacement

The LOCK or DRAG PIN is subject to wear by design and may need
replacement after extended use. Simply remove the ball swivel tension
screw with hex wrench. The Spring and Lock Pin should follow (FIG. 3).
If not, turn the ball until they fall out. Replace the Lock Pin (order

#003-307), Spring and Tension Screw.

Thread Pin Replacement Kit #003-629

Includes Jaw Screw, Left and Right Thread Pins, O-Rings, and Tube
of Synthetic Grease.

FIG. 1

O-Ring

FIG. 2

FIG. 3

Jaw

Jaw Thread Pin

one located in
each jaw

“L” For Left
Hand Thread

Jaw Screw

Lock Pin

#003-307

Spring

520 Attachment Set #003-520

Included with MicroBlock Ball Vise #003-684.

Tension

Screw

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TM

MicroBlock Ball Vise For Engraving and Jewelry Making

PARTS LIST • #003-683 & #003-684

GRS MicroBlock Ball Vise

Complete Assembly #003-683 & #003-684

PART # DESCRIPTION
1 003-308 Stainless Steel 80 mm Base
2 022-379 Shielded Bearing
3 022-383 .015" x .513 " x .750" SS Washer
4 003-309 Crown
5 003-316 Jaw Screw Yoke
6 003-312 Bearing Spacer Brake Rotor
7 003-315 MicroBlock Vise Jaw
8 003-314 Left Hand Drive Nut
9 002-084 O-Ring, 3/8" x 1/2" x 1/16"
10 003-313 Right Hand Drive Nut
11 003-317 Jaw Screw
12 022-380 Tolerance Ring
13 003-307 Lock Pin
14 003-311 Bearing Retainer
15 002-067 10-32 x 1/2" SHCS
16 003-310-V2 Support Base
17 022-382 Flat Nose Set Screw
18 003-306 Drag Spring
19 003-140 GRS Label
20 003-050 Attachment Pin #1
21 022-822 4 mm Hex Wrench
22 022-823 M5 x .8 x 10 mm Long SHCS
23 024-215 T-Wrench 5 mm Hex
24 003-679 Thermo-Loc Sample Kit

900 Overlander Road • Emporia, KS 66801 USA
800-835-3519 • 620-343-1084 • Fax: [phone]
[e-mail] • www.grstools.com
Last Updated: 2014-10-15

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