Grizzly T31566 User guide

MODEL T31566

ALL -SWIVEL

HD MOBILE BASE

INSTRUCTIONS

For questions or help with this product contact Tech Support at [phone] or [e-mail]

Introduction

Your new Heavy-Duty Mobile Base is designed to
give you a stable and mobile platform upon which
to mount machinery and equipment.

Inventory

Description Qty

A. Right Corner Brackets ................................ 2

Left Corner Brackets .................................. 2

B.

21" Side Rails ............................................. 4

C.

3" Swivel Casters ....................................... 4

D.

E. Foot Pedals ................................................ 4

Compression Springs ................................. 4

F.

G. Foot Pedal Plungers ................................... 4

H. Adjustable Rubber Feet .............................. 4

I. Shoulder Bolts M8-1.25 x 50 ...................... 4

Hardware (Not Shown)

J.

—Hex Bolts M8-1.25 x 16......................... 32

—Lock Nuts M8-1.25 ................................ 20

—Hex Nuts M10-1.5 ................................... 4

Specifications

• Minimum Inside Dimensions .......... 19" x 21"

• Maximum Inside Dimensions . . 291⁄2 " x 291⁄2 "

• Maximum Weight Capacity ............1200 lbs.

A

A

C

D

F

E

B

B

G

H

I

Tools Needed for Assembly

• Open-End Wrench or Socket 13mm .......... 1

• Open-End Wrench or Socket 14mm .......... 1

• Open-End Wrench 17mm ........................... 1

• Measuring Tape .......................................... 1

COPYRIGHT © AUGUST, 2019 BY GRIZZLY INDUSTRIAL, INC.

NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE

OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.

(FOR MODELS MFD. SINCE 08/19) #AI20552 PRINTED IN CHINA

Figure 1. Inventory.

Operating machinery on an unsecured
mobile base may allow the machine to
shift unexpectedly, which could result in
accidental contact with a cutting device or
other moving parts.

V1.0 8.19

Preparation for Assembly

Lifting heavy machinery
or parts without proper
assistance or equipment

injuries, crushing injuries,

There is more than one way to assemble the
mobile base. Each method has advantages and
disadvantages, depending on the size and weight
of the machine that you plan to put on the mobile
base. The purpose of this section is to help you
decide which method will work best for your
situation.

If the machine can be lifted, the easiest method
is to assemble the mobile base according to the
dimensions of your machine, and then lift and
place the machine on the corner bracket plates
of the mobile base (see Figure 2). Proceed to

Assembling Base & Mounting Machine on
Page 3 if your machine fits this situation.

Corner

Bracket

Note: Anything extending or opening outward with
a 3" high band around the base of the machine
(see Figure 3) may interfere with the installation
of the machine on the base, so be sure to account
for that prior to assembly.

3"

Figure 3. Example of 3" high band around

machine base.

Plate

Figure 2. One of four corner brackets.

If the machine is top heavy or has a narrow base
(such as a drill press), there is an increased risk of
tipping when moving it around on a mobile base.
To reduce the risk, a mounting base plate should
be used between the mobile base and machine.
Proceed to Making a Base Plate on Page 9 if
your machine fits this situation.

If the machine is too heavy to lift into position
on the mobile base, then the base can be built
around the machine. Proceed to Assembling
Base Around Machine on Page 4 for instructions
on how to build the base around the machine.

may result in strains, back

or property damage.

To avoid serious personal injury, keep
hands and fingers clear of machine base
and mobile base pinch points when placing
machine.

Before moving machine and mobile base,
check to make sure pathway is clear of
any hoses, wires, tools or shop debris. An
abrupt impact with an object along path of
travel can lock a wheel and cause machine
to fall over, resulting in serious personal
injury. Disconnect machine from power
supply or dust collection before moving.

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T31566 Mobile Base (Mfd. Since 08/19)

Assembling Mobile Base

1. Attach swivel caster to each corner bracket

with (4) M8-1.25 x 16 hex bolts and (4)
M8-1.25 lock nuts (see Figure 4).

Swivel
Caster

Corner

Bracket

3. Attach foot pedal to each front corner bracket
using (1) M8-1.25 x 50 shoulder bolt and (1)
M8-1.25 lock nut (see Figure 6).

Foot

Pedal

Figure 6. Attaching foot pedals.

Figure 4. Swivel caster attached to bracket.

2. Install foot pedal plunger and spring into each

corner bracket (see Figure 5), and attach a
rubber foot (with M10-1.5 hex nut) to the bot­tom of each foot pedal plunger.

Spring

Foot Pedal

Plunger

Rubber

Foot

Figure 5. Installing foot pedal plunger and

spring.

4. Measure machine base footprint size.

5. Arrange corner brackets in desired orienta-

tion. Choose orientation to ensure safe clear­ance around base of machine, as well as
desired placement within shop.

Slide corner brackets over ends of side rails

6.

(see Figure 7). Position corner brackets so
inside opening is
width and length of machine base footprint.

Inside

Opening

1

⁄4"– 1⁄2" larger than both

Right Corner

Bracket

Front

T31566 Mobile Base (Mfd. Since 08/19)

Left Corner

Bracket

Figure 7. Example of assembled mobile base

with inside opening slightly larger than machine

base to ensure easy fit.

-3-

7. Secure each end of corner brackets with (2)
M8-1.25 x 16 hex bolts (see Figure 8).

9. Verify machine is properly seated on mobile­base corner pads, it is free of wobbles, and
there is no deflection in mobile base.

Hex

Bolts

Side

Rail

Figure 8. Securing corner bracket with both hex

bolts.

BOTH hex bolts must be secured against
side rail in each end of corner brackets. DO
NOT load machine onto mobile base until all
bolts have been firmly tightened. Improper
tightening or only using one bolt can result
in collapse or tipping when moving machine
around later, which could result in crushing
injury or property damage.

8. With the help of an assistant, or proper lifting

equipment, lift and position machine inside
mobile base (see Figure 9).

— Deflection: If any deflection exists, verify

all fasteners are securely tightened and
mobile base is properly assembled. If
this does not solve the problem, verify
machine does not exceed the rated weight
limit listed in Specifications on Page 1.

— Wobbles: Wobbles can easily be elimi-

nated by placing an appropriately sized
shim between machine and mobile base
where needed.

Assembling Base Around Machine

If your machine is oddly shaped or too heavy to
lift into the mobile base, you can assemble the
mobile base around your machine as an alternate
option for assembly. Always have an assistant
stabilize the machine during assembly.

Items Needed Qty

Additional Person .............................................. 1

Open-End Wrench 13mm
Socket Wrench 13mm
12" 4x4 Block
12" 2x4 Block

To assemble mobile base around machine:

1.

Install foot pedal plunger and spring into each

corner bracket (see Figure 10), and attach a
rubber foot (with M10-1.5 hex nut) to the bot­tom of each foot pedal plunger.

..................................................... 1

..................................................... 1

.................................. 1

....................................... 1

Figure 9. Example of machine properly placed

inside mobile base.

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Spring

Foot Pedal

Plunger

Figure 10. Installing foot pedal plunger and

spring.

T31566 Mobile Base (Mfd. Since 08/19)

Rubber

Foot

2. Attach each foot pedal to corner bracket
with (1) M8-1.25 x 50 shoulder bolt and (1)
M8-1.25 lock nut (see Figure 11).

Foot

Pedal

Figure 11. Attaching foot pedals.

3. Insert one side rail into the two front brackets,

as shown in Figure 12, then slide the bracket
assembly against the side of machine that
will typically be pushed against when moving
the machine.

4. Secure each end of rail to front brackets
with (2) M8-1.25 x 16 hex bolts, as shown in
Figure 13.

Slide other side rails into front brackets from

5.
Step 4. Secure rails to front brackets with (4)
M8-1.25 x 16 hex bolts, as shown in Figure

14.

x 4

Figure 14. Rails fastened to brackets (machine

removed for clarity).

Corner Brackets

with Rubber Feet

Side Rail

Figure 12. Rail inserted between corner

brackets.

x 2

x 2

6.

While an assistant lifts one side of the

machine, slide rail-bracket assembly from
Step 5 under machine, as shown in Figure 15.

Note: It may be necessary to adjust position

of rails once machine is on base assembly.

Side rails may be cut down to accommodate

machines with smaller footprints. However,
reducing length of mobile base decreases
stability and increases likelihood of tipping.
Base plates should be constructed for tall or
top-heavy machines (see Page 9).

Figure 13. Rail secured to corner brackets.

T31566 Mobile Base (Mfd. Since 08/19)

Rail-Bracket

Assembly

Figure 15. Rail-bracket assembly placed under

front of machine.

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Attach swivel casters to each rear bracket

7.

with (4) M8-1.25 x 16 hex bolts and (4)
M8-1.25 lock nuts (see Figure 16).

Note: There is limited space when install-

ing fasteners inside the bottom of the caster
wheels.

Hex Bolt

(1 of 4)

Lock Nut

(1 of 4)

Swivel
Caster

Figure 16. Swivel caster attached to corner

bracket.

10. Secure rail to rear brackets with (4) M8-1.25
x 16 hex bolts, as shown in Figure 18.

x 4

Figure 18. Remaining rail-bracket assembly

secured.

11. With the help of an assistant, shift machine to
remove 2x4 block.

With the help of an assistant, tilt machine,

12.

and insert a 2x4 block beneath machine and
mobile base frame (see Figure 19).

8. With the help of an assistant, lift rear side
of machine, then place a 2x4 block under
machine (see Figure 17).

Slide each of the rear brackets onto remain-

9.

ing side rail, and slide assembly into rail­bracket assembly from Step 6. Adjust fit until
rail-bracket assembly rests against machine
body (see Figure 17).

12" 2x4

Figure 17. Rear brackets and rail placed around
back of machine, which is raised up with a wood

block.

Note: Use caution when tilting machine sup-

ported on casters.

12" 2x4

Figure 19. 2x4 Placed beneath machine and

mobile base frame.

13. Attach swivel casters to each front bracket
with (4) M8-1.25 x 16 hex bolts and (4)
M8-1.25 lock nuts (see Figure 16).

Note: There is limited space when install-

ing fasteners inside the bottom of the caster
wheels.

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T31566 Mobile Base (Mfd. Since 08/19)

14. With the help of an assistant, tilt machine and
remove 2x4 block from beneath machine and
mobile base frame, and set machine on the
floor.

Note: When moving the mobile base, the rub-

ber feet should not touch the floor. Likewise,
when operating the machine, ensure that the
rubber feet are fixed firmly against the floor to
provide stability.

Adjusting Rubber Feet

The height of the rubber feet can be adjusted
to stabilize the machine. To ensure the machine
does not move during operations, always make
sure the adjustable rubber feet (see Figure 20)
are firmly touching the ground before operating
the machine.

Tool Needed Qty

Open-End Wrench 17mm .................................. 1

To adjust rubber foot height:

4. Raise foot pedals up to lift rubber feet and

move machine (see Figure 21).

Foot Pedal

Figure 21. Foot pedal raised.

IMPORTANT: When moving the mobile base, the

rubber feet should not touch the floor. Likewise,
when operating the machine, ensure that the rub­ber feet are fixed firmly against the floor to provide
stability, without lifting casters.

1. Loosen hex nut on each foot to allow foot
(see Figure 20) to move up or down as
needed.

Hex

Nut

Rubber Foot

Figure 20. Rubber foot and hex nut adjustment.

2.

With all casters on the ground, lower each

foot to firmly touch the ground without lifting
caster.

Tighten hex nut on each foot.

3.

T31566 Mobile Base (Mfd. Since 08/19)

-7-

Using Mobile Base

1. DISCONNECT MACHINE FROM POWER!

2. With machine mounted on mobile base, lift

foot pedals to raise rubber feet. If needed,
adjust feet further to ensure feet do not drag
during move. Refer to Adjusting Rubber
Feet on Page 7 for details.

— If floor is uneven, retract feet completely to

eliminate the chance of the pads dragging.

Check to make sure machine pathway is

3.

clear of all obstructions.

Push machine from lowest possible point to

4.

avoid tipping it over, and move it to its new
location. The best control is usually achieved
by pushing from swivel caster side of base.

— If the machine is large, get an assistant to

help stabilize the machine while it is being
moved.

Adjust each foot until it touches floor, then

5.

rotate each foot so it firmly presses against
ground without raising casters.

Check machine to make sure it is stable in

6.

its new location, and make sure machine is
clear of any obstructions before reconnecting
power and turning machine ON.

Before moving machine and mobile base,
check to make sure pathway is clear of
any hoses, wires, tools or shop debris. An
abrupt impact with an object along path of
travel can lock a wheel and cause machine
to fall over, resulting in serious personal
injury. Disconnect machine from power
supply or dust collection before moving.

To reduce risk of serious injury when using
this mobile base:

1. LOCKING FEET. Do not operate machine
on mobile base unless all mobile base feet
firmly contact floor. Using the machine on
base when it is not secured could result in
a loss of workpiece control.

2. MACHINE STABILITY. Test for stability
after placing the machine in its new location.
Adjust feet so they all touch the ground,
then push on machine at several locations,
making sure it is not off balance. The hex
nuts can be adjusted up to top of foot
assembly to lock foot height setting.

-8-

T31566 Mobile Base (Mfd. Since 08/19)

Making a Base Plate

If the footprint of the machine is too small for the
mobile base or the machine doors or fixtures do
not clear the side rails, you can mount it to a base
plate, as shown in Figure 22.

A good quality base plate can increase the stan­dard footprint of machines, such as drill presses,
to make them more stable. The base plate should
be approximately
(do not use OSB, MDF, or particle board) to hold
the weight of the machine.

3

⁄4" thick and made of plywood

4. Lower rubber feet to keep mobile base from
moving (see Page 7).

With help from an assistant, place machine

5.

on base plate.

Position machine stand close to front or cen-

6.

ter of mobile base, so mobile base will not be
a tripping hazard.

Drill holes through base plate and secure

7.

machine with through bolts, flat washers, lock
washers, and hex nuts (see Figure 23).

Needed Materials for Base Plate Qty

• Plywood 3⁄4" x Base Width x Base Length . . 1

• Hex Bolts 5⁄16" x 1-1⁄4" .................................. 4

• 5⁄16" Hex Nuts .............................................. 4

• 5⁄16" Lock Washers ...................................... 4

• 5⁄16" Flat Washers ........................................ 8

To make and use base plate:

Place plywood base plate on assembled

1.

mobile base (see Page 3 for assembly
instructions).

Drill 3⁄8" holes through base plate and

2.

bracket plates at each corner of mobile base.

Secure base plate to mobile base with 5⁄16"

3.

hex bolts, hex nuts, flat washers, and lock
washers, as shown in Figure 22.

Base
Plate

Mounting
Holes

Note: There is limited space underneath

base plate, which can make it difficult to
tighten fasteners. If needed, insert bolts from
below and fasten washers and nuts from
above.

Figure 23. Example of drill press mounted to a

base plate.

Metal
Plate

Mobile
Base

Figure 22. Example of mounting plywood base

plate to mobile base.

T31566 Mobile Base (Mfd. Since 08/19)

-9-

5

10

12

Please Note: We do our best to stock replacement parts whenever possible, but we cannot guarantee that all parts shown here
are available for purchase. Call [phone] or visit our online parts store at www.grizzly.com to check for availability.

T31566 Parts Breakdown & List

12

12

11

1

1

4

3

3

1

7

2

2

1

6

8

11

9

REF PART # DES CRIP TION REF PART # DES CRIP TION

1 PT31566001 RAIL 21" 7 PT31566007 FOOT PEDAL PLUNGER 17MM
2 PT31566002 RI GHT CORNER BRACKE T 8 PT31566008 COMPRESSI ON SPRING 22 X 1.5 X 61
3 PT31566003 L EFT CORNER BRACKE T 9 PT31566009 HE X NUT M10-1. 5
4 PT31566004 CASTER, 3" SWIVEL 10 PT31566010 ADJUSTABLE FOOT M10-1.5 X 30
5 PT31566005 FOOT PEDAL 11 PT31566011 LOCK NUT M8-1.25
6 PT31566006 SHOULDER BOLT M8-1. 25 X 8, 8 X 50 12 PT31566012 HEX BOLT M8-1. 25 X 16

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BUY PARTS ONLINE AT GRIZZLY.CO M!

Scan QR code to visit our Parts Store.

T31566 Mobile Base (Mfd. Since 08/19)

WARRANTY & RETURNS

Grizzly Industrial, Inc. warrants every product it sells for a period of 1 year to the original purchaser from
the date of purchase. This warranty does not apply to defects due directly or indirectly to misuse, abuse,
negligence, accidents, repairs or alterations or lack of maintenance. This is Grizzly’s sole written warranty
and any and all warranties that may be implied by law, including any merchantability or fitness, for any par­ticular purpose, are hereby limited to the duration of this written warranty. We do not warrant or represent
that the merchandise complies with the provisions of any law or acts unless the manufacturer so warrants.
In no event shall Grizzly’s liability under this warranty exceed the purchase price paid for the product and
any legal actions brought against Grizzly shall be tried in the State of Washington, County of Whatcom.

We shall in no event be liable for death, injuries to persons or property or for incidental, contingent, special,
or consequential damages arising from the use of our products.

The manufacturers reserve the right to change specifications at any time because they constantly strive to
achieve better quality equipment. We make every effort to ensure that our products meet high quality and
durability standards and we hope you never need to use this warranty.

In the event you need to use this warranty, contact us by mail or phone and give us all the details. We will
then issue you a “Return Number,’’ which must be clearly posted on the outside as well as the inside of
the carton. We will not accept any item back without this number. Proof of purchase must accompany the
merchandise.

Please feel free to write or call us if you have any questions about the machine or the manual.

Thank you again for your business and continued support. We hope to serve you again soon.

To
you can
applicable information for

take advantage of this warranty, you must register it at https://www.grizzly.com/forms/warranty, or

scan the QR code below to be automatically directed to our warranty registration page. Enter all

the product.

WARRANTY