Grizzly T33447 User guide

MODEL T33447

ROUGH SURFACE

MOBILE BASE

INSTRUCTIONS

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

Introduction

The T33447 Rough Surface Mobile Base is
designed to give you a stable and mobile platform
upon which to mount machinery and equipment.

Inventory

Description Qty

A. Right Front Corner Bracket ........................ 1

Left Front Corner Bracket ........................... 1

B.

Right Rear Corner Bracket ......................... 1

C.

Left Rear Corner Bracket ........................... 1

D.

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

E.

Casters, 5" Swivel ...................................... 2

F.

Wheels 5" ................................................... 2

G.

H. Foot Pedals ................................................ 2

Foot Pedal Springs ..................................... 2

I.

J. Foot Pedal Plungers ................................... 2

K. Adjustable Rubber Feet .............................. 2

L. Bearing Sleeves ......................................... 4

M. Shoulder Bolts M10-1.5 x 56 (Wheels) ....... 2

N. Shoulder Bolts M8-1.25 x 52 (Pedals) ........ 2

O. Hex Bolts M8-1.25 x 16 ............................ 24

Hardware (Not Shown)

P.

—Lock Nuts M8-1.25 ................................ 10

Specifications

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

• Maximum Inside Dimensions . . 29

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

1

⁄2 " x 291⁄2 "

A

C D

E

F

K

I

J

Figure 1. Inventory.

G

L

M

N

B

H

O

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.

COPYRIGHT © OCTOBER, 2022 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 07/22) #JM22442 PRINTED IN CHINA

***Keep for Future Reference***

V1.10. 22

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.

Plate

Note: Anything extending or opening outward
from 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.

Corner

Bracket

Figure 2. Corner bracket components.

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 5 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 and dust collection before moving.

-2-

Model T33447 (Mfd. Since 07/22)

Assembling Base & Mounting
Machine

Items Needed Qty

Open-End Wrenches/Sockets 13, 14, 17mm ....1 Ea

Measuring Tape
Additional Person
Lifting Equipment

To assemble base & mount machine:

Attach swivel caster to each front corner

1.

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

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

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

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

3. Attach foot pedal to each front corner bracket
using (1) M8-1.25 x 52 shoulder bolt and (1)
M8-1.25 lock nut (see Figure 6).

Foot

Pedal

x 2

x 4

Swivel

Caster

Figure 4. Swivel caster attached to front corner

bracket.

2.

Install foot pedal plunger and spring into

each front corner bracket (see Figure 5), and
attach rubber foot with pre-installed hex nut
to bottom of each foot pedal plunger.

Spring

Front

Corner

Bracket

Figure 6. Foot pedal attached.

Attach (1) wheel to each rear corner bracket

4.

using (1) M10-1.5 x 56 shoulder bolt and (2)
bearing sleeves (see Figure 7).

Wheel

Figure 7. Wheel installed on rear corner bracket.

Orient fixed wheels in same direc-

5.

tion machine will typically b e m o v e d
(see Figure 8). Mounting fixed wheels in
wrong direction will make it difficult to move
mobile base around in small spaces.

x 2

Foot Pedal

Plunger

Figure 5. Installing foot pedal plunger and

spring.

Model T33447 (Mfd. Since 07/22)

Rubber

Foot

(TOP VIEW OF CASTER)

Typical Direction of Movement

CORRECT INCORRECT

Figure 8. Orientation of fixed wheels for easy

machine movement.

-3-

6. Measure machine base footprint size.

7. Slide corner brackets over ends of side rails

(see Figure 9). Position corner brackets so

1

inside opening is

⁄4"– 1⁄2" larger than both

width and length of machine base footprint.

Inside

Opening

Figure 9. Properly assembled mobile base with

inside opening slightly larger than machine base

to ensure easy fit.

8. Secure each end of corner brackets with (2)
M8-1.25 x 16 hex bolts (see Figure 10).

With help from an assistant or lifting equip-

9.

ment, lift and position machine inside mobile
base (see Figure 11).

Note: It may be helpful to have foot pedal

plungers engaged to steady mobile base
when moving machine into position (see

Adjusting Rubber Feet on Page 7).

Figure 11. Example of machine properly placed

inside mobile base.

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

x 2

Side

Rail

Figure 10. Securing corner bracket to rail 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 using only one bolt can result
in collapse or tipping when moving machine,
which could result in crushing injury or
property damage. DO NOT overtighten
bolts. Overtightening can strip threads.

— 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 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.

-4-

Model T33447 (Mfd. Since 07/22)

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.

3. Insert one side rail into two front corner
brackets, as shown in Figure 14, then slide
bracket assembly against side of machine
that will typically be pushed against when
moving machine.

Items Needed Qty

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

Open-End Wrenches 13, 14mm
Socket Wrench 13mm
12" 4x4 Block
12" 2x4 Block

To assemble mobile base around machine:

Install foot pedal plunger and spring into each

1.

front corner bracket (see Figure 12), and
attach a rubber foot with pre-installed hex nut
to bottom of each foot pedal plunger.

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

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

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

...................1 Ea

Spring

Rubber

Foot

Corner Brackets

with Rubber Feet

Side Rail

Figure 14. Rail inserted between front corner

brackets with rubber feet.

Secure each end of rail to corner brackets

4.

with (2) M8-1.25 x 16 hex bolts, as shown in
Figure 15.

x 2x 2

Foot Pedal

Plunger

Figure 12. Installing foot pedal plunger and

spring.

2. Attach each foot pedal to front corner bracket
using (1) M8-1.25 x 52 shoulder bolt and (1)
M8-1.25 lock nut (see Figure 13).

Foot

Pedal

Figure 13. Attaching foot pedal to corner.

Figure 15. Rail secured to front corner brackets.

Model T33447 (Mfd. Since 07/22)

-5-

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

x 4

Figure 16. Rails fastened to front brackets

(machine removed for clarity).

With help from an assistant, tilt rear of

7.

machine, and place a 12" 4x4 block under­neath (see Figure 18).

Slide each rear corner bracket onto remain-

8.

ing side rail, then insert into rail-bracket
assembly from Step 6. Adjust fit until rail­bracket assembly rests against machine
body (see Figure 18).

While an assistant lifts one side of machine,

6.

slide rail-bracket assembly from Step 5 under
machine, as shown in Figure 17.

Note: It may be necessary to re-adjust posi-

tion of rails once machine is actually 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 tall
or top-heavy machines. Base plates should
be constructed for tall or top-heavy machines
(refer to Making a Base Plate on Page 9).

Rear Corner

Bracket (1 of 2)

Figure 18. Example of brackets and rail placed

around rear of machine, raised with wood block.

9.

Secure rails to corner brackets using

(8) M8-1.25 x 16 hex bolts, as shown in
Figure 19.

x 8

Side Rail

12" 4x4

Rail-Bracket

Assembly

Figure 17. Rail-bracket assembly placed under

front of machine.

-6-

Figure 19. Example of remaining rail-bracket

assembly secured.

With machine still supported by 4x4 block,

10.

install (2) wheels using (2) M10-1.5 x 56
shoulder bolts and (4) bearing sleeves
(see Figure 20).

Model T33447 (Mfd. Since 07/22)

x 2

x 2

14. With help from an assistant, tilt machine and
remove 4x4 block.

Note: When moving mobile base, rubber feet

should not touch floor. However, when oper­ating machine, ensure rubber feet are fixed
firmly against floor to stabilize machine.

Figure 20. Wheels installed while base is

supported by 4x4.

With help from an assistant, tilt machine to

11.

remove 4x4 block.

With help from an assistant, tilt machine and

12.

insert a 12" 4x4 block beneath front of machine
and mobile base frame (see Figure 21).

12" 4x4

Figure 21. Example of 4x4 placed beneath

machine and mobile base frame.

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 23)
are firmly touching the ground before operating.

Tools Needed Qty

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

Adjustable Wrench

To adjust rubber feet:

1. Loosen hex nut on each foot to allow foot

(see Figure 23) to adjust up or down as
needed.

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

13. Attach swivel casters to each front corner of
assembly using (8) M8-1.25 x 16 hex bolts
and (8) M8-1.25 lock nuts (see Figure 22).

Note: There is limited space when installing

fasteners inside wheel casters.

x 4

Front Corner

Swivel Caster

(1 of 2)

Figure 22. Swivel caster attached to corner

bracket.

Bracket

(1 of 2)

Rubber Foot

Figure 23. Rubber foot and hex nut adjustment.

2.

With all casters on ground, press foot pedals

down to lock rubber feet in place without lift­ing casters.

Without moving feet, adjust hex nuts to top of

3.

each foot to secure setting.

Note: It may be helpful to use an adjustable

wrench to hold rubber foot in place while
adjusting hex nut.

Model T33447 (Mfd. Since 07/22)

-7-

4. Raise foot pedals to lift rubber feet and move
machine (see Figure 24).

IMPORTANT: When moving mobile base, rubber
feet should not touch floor. Likewise, when oper­ating machine, ensure that rubber feet are fixed
firmly against floor to provide stability, without lift­ing casters.

Foot Pedal

Figure 24. Foot pedal raised.

Using Mobile Base

1. DISCONNECT MACHINE FROM POWER!

2. With machine mounted on mobile base,

raise foot pedals to lift rubber feet. If needed,
adjust feet 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 chance of pads dragging.

Check to make sure machine pathway is

3.

clear of all obstructions.

4. Push machine from lowest possible point to
avoid tipping it over, and move it to its new
location. Best control is usually achieved by
pushing from swivel caster side of base.

— If machine is large, get an assistant to help

stabilize machine while it is being moved.

Press foot pedals down to lock base in place.

5.

Refer to Adjusting Rubber Feet on Page 7
for details.

Check machine to make sure it is stable in its

6.

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

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

1. LOCKING FEET. Do not operate machine
on mobile base unless both mobile base
feet firmly contact floor and raise base
enough to disable casters. Using machine
on base when it is not secured could result
in a loss of workpiece control.

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

-8-

Model T33447 (Mfd. Since 07/22)

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 25.

Base
Plate

Mounting
Holes

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

3

be approximately

⁄4" thick and made of plywood
(DO NOT use OSB, MDF, or particle board) to
hold the weight of the machine.

IMPORTANT: A base plate should not be used
with machines over 500 lbs. The base plate
dimensions should not be more than twice the
width of the machine base.

Items Needed Qty

Drill............................................................................. 1

3

Drill Bit

⁄8"................................................................. 1

Wrenches 1⁄2 "............................................................ 2

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

Hex Bolts 5⁄16" x 11⁄4"............................................... 4

5

Hex Nuts
Lock Washers
Flat Washers

⁄16"............................................... ........... 4

5

⁄16"............................................... ... 4

5

⁄16".................................................. . . 8

To make a base plate:

Metal
Plate

Mobile
Base

Figure 25. Example of mounting plywood base

plate to mobile base.

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.

3

Drill

7.

⁄8" holes through base plate and secure
machine with hex bolts, flat washers, lock
washers, and hex nuts (see Figure 26).

1. Place plywood base plate on assembled
mobile base (see Figure 25).

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, flat washers, lock washers and hex
nuts, as shown in Figure 25.

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 26. Example of drill press mounted to a

base plate.

Model T33447 (Mfd. Since 07/22)

-9-

T33447 Parts Breakdown & List

REF PART # DES CRIPTIO N REF PART # DES CRIPTIO N

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 (800) 523 - 4777 or visit our online parts store at www.grizzly.com to check for availability.

1

3

5

4

2

3

6

T33447

6

16

7

8

9

griz zly .com

12

10

11

20

19

18

13

17

14

15

1 PT33447001 LEFT FRO NT CORNER BRACKET 11 PT33447011 ADJUSTABLE FOOT M10-1.5 X 30
2 PT33447002 RI G HT FRONT CORNER B RACKE T 12 PT33447012 RAIL 21"
3 PT33447003 HEX BOLT M8-1.25 X 16 13 PT33447013 WHEEL 5"
4 PT33447004 FOOT PEDAL 14 PT33447014 SHOULDER BOLT M10-1.5 X 14, 10 X 42
5 PT33447005 CASTER, 5" SWIVEL 15 PT33447015 RI GHT REAR CORNE R BRACKET
6 PT33447006 LOCK NUT M8-1.25 16 PT33447016 LEFT REA R CORNER B RACKE T
7 PT33447007 SHOULDER BOLT M8-1.25 X 26, 8 X 24 17 PT33447017 WHEEL BEARING SLEEVE
8 PT33447008 FOOT PEDAL PLUNGER 17MM 18 PT33447018 GRIZZLY.COM LABEL
9 PT33447009 COMPRESSION SPRI NG 1.5 X 22 X 61 19 PT33447019 STABILITY WARNING LABEL
10 PT33447010 HE X NUT M10 -1. 5 20 PT33447020 QR CODE

-10 -

BUY PARTS ONLINE AT GRIZZLY.CO M!

Scan QR code to visit our Parts Store.

Model T33447 (Mfd. Since 07/22)

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