1. Macromizer Wheelbase Design 9.28.07 EJL
0.3125” wheel mount
through hole
2.5625”
3.625”
TOP
1.4375”
31.875”
0.4375”
0.6875”
0.625”
½” thick plate Al
3.8125”
6.9375”
1”x1”x0.25” frame joint protrusion cutout (milled)
Frame crossbeam
0.4375” diam.
0.25” deep frame protrusion
Cutout (milled)
4.0625”
4.5625”
0.5”
0.6875”
0.25” U-bolt
through hole
0.6875” leg bolt through hole
Wheels:
Faultless Business Machine Casters
2.5 x 1.75” polypropylene wheels
Roller bearing
400lb. Per-wheel load rating
3.5” total height
LEG ASSEMBLY
5/8”-11 stud, 6” length
5/8” Lock Washer
Pads:
Swivel Leveling Mount with Vibration Damping Pad
5/8”-11 thread size, 1.875” pad diameter, 995lb. Per-pad load rating
0.050” max load
Rubber pad
Purchased without bolt/stud
5/8” Nut
5/8” Washer
Plate (0.5” thick)
Other Hardware:
4x U-bolt, 1/4”x1-1/8”x3-1/2” with lock washer, nut and brace
8x Nut, bolt, washer and lock washer to fasten wheel bases
3.5”
Pad
(Drawing not to scale)

2. Macromizer wheel base notes: Requirements:
Total height must not exeed 3.59” (91.3 mm) in order to fit beneath plate.
Weight capacity must be >= 330 lbs.
Preferences:
Soft wheel material to absorb shock while in transit.
Largest wheel possible to minimize rolling obstruction issues.
Roller bearings for smoother movement / reduced static friction under load.
Total height should be as close to 3.59” as possible to minimize tilt of instrument.
Options:
Faultless Business Machine Casters (p88)
2.5 x 1.75in. wheels, polypropylene material (60D hardness), roller bearing, 400lb. load rating, 3.5in. total height
Cart King Casters – Dual Wheel (p1212)
2x(2.0 x 0.875in.) wheels, neoprene (78A hardness), plain/roller/ball bearings, 350lb. load rating, 3.25in. total height
McMaster-Carr Low-Mount Turret Casters (p1216)
2x(2.0 x 0.56in.) wheels, polyurethane on iron (95A hardness), plain bore (no bearings), 350lb. load rating, 2.5in. total height
McMaster-Carr Huron Casters (p1210)
2.5 x 1.125in. wheels, polypropylene (60D), plain self-lube bearings or plain bore, 220lb. load rating, in. total height
Huron Jr. Casters (p1217)
2.5 x 1.125in. wheels, solid rubber (75A), plain bore (no bearings), 100lb. load rating, in. total height
Macromizer Leveling Mount Notes
Total height must exceed 114mm / 4.49in. (gives 1cm above aluminum plate).
Soft pads to maximize shock absorption.
Swivel pads to allow for angle compensation and floor irregularities.
Recommended:
Swivel Leveling Mount with Vibration Damping Pad (p1247)
3/8”-16 thread size, in. pad diameter, 995lb. max load, 0.050” max load, cloth/rubber laminate pad. Specify longer bolt, dimension B must be >= 4.5”