Dynapar CPL COUPLINGS Data Sheet

ACCESSORIES

Dynapar

Angular Misalignment

When the center lines of the shafts extend and
form an obtuse angle. The intersection of this
obtuse angle should be at the center of the
flexible beam area.

Parallel Misalignment

The shaft's center lines are parallel but offset.
When the coupling is installed there should be
two equal obtuse angles within the coupling.

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CPL COUPLINGS

Proper shaft coupling
protects precision encoders from all
of these common hazards. Use of a
well engineered coupling can save
many times its cost by eliminating
failures due to excessive shaft
loading, electrical leakage, and
thermal stress.

Electrical and Thermal Stress

The supplied insulator insert blocks transfer of
static charges, leakage currents, and heat to the
encoder. These stresses have been proven to be
contributory to bearing damage as well as
electrical failures.

The shafts are not in the same plane. Center line

Skewed Misalignment

extension is not parallel or intersecting. There can be
two obtuse angles of varying degrees. These angles
should be centered within the coupling.

Axial Motion

Motion in the direction of the center lines of the
shafts, such as motor shaft "thrust". Usually
created by loose bearings or other elements that
do not restrain the motion.

ORDERING INFORMATION

Coupling Model Numbers should be selected first by Encoder Application duty, then by specific encoder shaft size and drive shaft size. Most

applications will use the Primary Bore as the encoder end, but it is permissible to reverse the coupling to accommodate specific shaft

Model Primary Secondary Dimensions Maximum Misalignment Peak Torque
Number Bore Bore

CPL00750125 1/8 1/8, 3/16 Very Light Duty
CPL00750187 3/16 3/16, 1/4 0.750 0.875 0.230 3° 0.020 0.035 35 E11, E15,
CPL00750250 1/4 1/8, 1/4

CPL01000187 3/16 3/16, 1/4 Light Duty
CPL01000250 1/4 1/4, 3/8 1.000 1.250 0.290 5° 0.025 0.060 45 E20, EC80, 523, 42,
CPL01000375 3/8 3/16, 3/8 525, 21/22, 31/32

CPL01250250 1/4 1/4, 3/8 Medium Duty
CPL01250375 3/8 3/8, 1/2 1.250 1.250 0.348 7° 0.038 0.060 75 42, 525, 625,
CPL01250500 1/2 1/4, 1/2 21/22, 60

CPL01500375 3/8 3/8, 1/2 Heavy Duty
CPL01500500 1/2 1/2, 5/8 1.500 1.500 0.400 10° 0.035 0.060 100 625, EX625,
CPL01500625 5/8 3/8, 5/8 60, 60P

CPL02000875 7/8 3/8, 5/8 Extra Heavy Duty
CPL02001000 1 3/8, 5/8 2.000 2.000 0.450 10° 0.040 0.060 300 625, 60P
CPL02001125 1 1/8 3/8, 5/8

CPLM1000250 1/4 4, 5, 6 mm 1.000 1.250 0.290 5° 0.025 0.060 45 E20, EC80, 523,

CPLM1250375 3/8 6, 8, 10 mm 1.250 1.250 0.348 7° 0.038 0.060 75 42, 525, 625,

CPLM1500500 1/2 6, 8, 10 mm 1.500 1.500 0.400 10° 0.035 0.060 100 60, 60P

combinations. Each coupling is supplied with Secondary Bore insulator inserts as listed.

D= Dia. L= Len. G= Grip Angular Parallel Axial (lb. - in.)

Encoder Application

(Series)

Light Duty

525, 21/22

Medium Duty

21/22

Heavy Duty

Note: 1. For extremely high acceleration rates, consider using the next larger coupling size.

2. When coupling an encoder to a shaft which is stepped down from a larger size, always use a heavy-duty or extra-heavy-duty
coupling.

3. For maximum life, encoders must be installed and aligned such that the encoder shaft to driving shaft alignment is within the

0.003" TIR NEMA standard despite the maximum misalignment specified.

5.04