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Accessories - Measuring Wheels/Pinion Gears

Measuring wheels are a very cost-effective way to use rotary encoders to measure linear motion such as a cut to length applications. Measuring wheels are also useful when it is inconvenient to mount the encoder directly to the motion device. It is common to have one or two measuring wheels mounted on an encoder shaft. The two most important factors in selecting the best measuring wheel for a given application are the circumference and the surface material. The surface material must be chosen to give optimal traction without unduly compromising wear, while the circumference should be selected to give the best accuracy within the mounting constraints available.

EPC offers two types of measuring wheels in both english and metric circumferences. The first type, Faced Measuring Wheels, has a wide contact surface with a variety of faced coatings, one of which will be suitable for nearly every specialized application. The second, Rubber Insert Measuring Wheels, uses a replaceable rubber insert, or "spare tire", that is easier to set up and maintain, and fits most general-purpose requirements.

Recommended Use for Measuring Wheels

Knurled
Faced

Rubber
Faced

-40° F to +275° F
80 Urethane
Faced*

-40° F to +155° F
90 Urethane
Faced*

-40° F to +155° F
Rubber
Insert
Coarse Fabric
Cloth Tape
Rubber
Rough Wood
Carpet
Foam
Insulation

Fine Fabric
Paper
Metal (crease-free)
Film
Foil
Hard Plastic
Cable

Soft Materials
Smooth Materials
Cardboard
Matting
Sandpaper
Insulated Wire
Metal
Fine Fabric
Paper
Metal (crease-free)
Film
Foil
Hard Plastic
Cable
* 90 urethane is a more durable and performs better for tracking rough or hard fibers than the slightly softer 80 urethane material. The above recommendations are only guidelines. Performance may vary depending on your application. Contact Customer Service for specification assistance.

 

Faced Measuring Wheels

Faced Measuring Wheels

Stock # Circumference Rim Type Bore Width
161360 (TR1) 6" 85 Urethane 1/4" 0.25"
161401 (TR1) 6" Knurled 1/4" 0.25"
161425 (TR1)
Anodized
6" Knurled 1/4" 0.25"
161370 6" Knurled 1/4" 0.4"
161376 6" Knurled 3/8" 0.4"
161362 12" Knurled 1/4" 0.4"
161379 12" Knurled 3/8" 0.4"
161332 12" Knurled 1/4" 1"

161419
Anodized

12" Knurled 1/4" 1"
161428 (TR3) 12" 60 Urethane 3/8" 0.75"
161432 (TR3) 12" Knurled 3/8" 0.75"
161333 12" Knurled 3/8" 1"
161420
Anodized
12" Knurled 3/8" 1"
161310 12" Rubber 1/4" 1"
161331 12" Rubber 3/8" 1"
161334 12" Grooved 1/4" 1/2"
161335 12" Grooved 3/8" 1/2"
161336 12" 80 Urethane 1/4" 0.70"
161337 12" 80 Urethane 3/8" 0.70"
161338 12" 90 Urethane 1/4" 0.70"
161339 12" 90 Urethane 3/8" 0.70"
161346 12" Rubber 1/4" 1/2"
161347 12" Rubber 3/8" 1/2"
161349 12" 90 Urethane 5/8" 0.70"
161344 1/3 Meter Urethane 1/4" 5/8"
161359 1/3 Meter Urethane 3/8" 5/8"
161430 (TR3) 1/3 Meter 60 Urethane 3/8" 0.75"
161434 (TR3) 1/3 Meter Knurled 3/8" 0.75"
161361 1/3 Meter Knurled 1/4" 10 mm
161380 1/3 Meter Knurled 3/8" 10 mm
161399 (TR1) 200 mm 85 Urethane 1/4" 0.25"
161400 (TR1) 200 mm Knurled 1/4" 0.25"
161426 (TR1)
Anodized
200 mm Knurled 1/4" 0.25"
161371 200 mm Knurled 1/4" 10 mm
161375 200 mm Knurled 3/8" 10 mm
161372 300 mm Knurled 1/4" 10 mm
161377 300 mm Knurled 3/8" 10 mm
161373 400 mm Knurled 1/4" 10 mm
161378 400 mm Knurled 3/8" 10 mm
161374 500 mm Knurled 1/4" 20 mm
161381 500 mm Knurled 3/8" 20 mm

 

Rubber Insert Measuring Wheels

Rubber Insert Measuring Wheels

 

All O-rings are VITON "O" Rings with 5.34 mm cross section, SHORE 75-78, EXPLAN ONLY

Stock # Circumference

# of
Inserts

Bore Width O-Ring
In. Dia.
161363 200 mm 1 1/4" 10 mm 50.16 mm
161382 200 mm 1 3/8" 10 mm 50.16 mm
161364 300 mm 1 1/4" 10 mm 81.92 mm
161384 300 mm 1 3/8" 10 mm 81.92 mm
161365 400 mm 1 1/4" 10 mm 113.67 mm
161385 400 mm 1 3/8" 10 mm 113.67 mm
161366 500 mm 2 1/4" 20 mm 145.42 mm
161388 500 mm 2 3/8" 20 mm 145.42 mm
161369 1/3 Meter 1 1/4" 10 mm 94.62 mm
161387 1/3 Meter 1 3/8" 10 mm 94.62 mm
161367 6" 1 1/4" 10 mm 37.47 mm
161383 6" 1 3/8" 10 mm 37.47 mm
161368 12" 1 1/4" 10 mm 85.09 mm
161386 12" 1 3/8" 10 mm 85.09 mm

 

Pinion Gears for TR2 Tru-Trac™

Stock # Tooth Count Pitch Dia. Bore
176220 40 1.2732" 1/4"

 

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