FLEXIMITE™ Flexible Disc Servo Couplings (Size 5)

OUTER DIAMETER 2 1/2 Inch (63.5 mm)
These couplings are especially designed for precision instruments, encoder drives, robotics, aircraft equipment, radar, laser, optical/mechanical devices, computers, precision remote controls. UNEQUALED PERFORMANCE.

Some of the features are: Zero backlash. Low inertia. Handles offset and angular misalignment. Torsional rigidity. Uniform velocity. No friction, wear, or lubrication. Long life. Low side loads on bearings. Accurate concentricity. Unaffected by dust or corrosive atmosphere. Available in four O.D. sizes, and any bore in inch or metric.

Assembly Style Options

Type C Discs with hubs mounted at 90º with respect to each other. Outstanding for general applications. High torsional rigidity with relatively low radial bearing loads. Slightly longer than Type B.

Specifications

Size 5
Overall Diameter See Sizes
Hub 1 Diameter / Number 0.1875 Inch (B-501-1)
Recommended Clamp Number for Hub 1 [1] A-101-50AR, Round Clamp
Hub 2 Diameter / Number 0.1875 Inch (B-501-1)
Recommended Clamp Number for Hub 2 [2] A-101-50AR, Round Clamp
Torque 20 ft. lb.
  1. If a clamp style hub for hub 1 is selected, it is usually fitted with a clamp that must be ordered separately. Mark the checkbox in Special Options for “Include Shaft Collar Clamps.”
  2. If a clamp style hub for hub 2 is selected, it is usually fitted with a clamp that must be ordered separately. Mark the checkbox in Special Options for “Include Shaft Collar Clamps.”
  3. RPM data for reference only. Speed limitations depend on load, misalignment, size etc.

Misalignment

Angle 2 º
Parallel 0.010 Inch
T.I.R. 0.020 Inch

Moment of Inertia

Aluminum 4.15 oz.in²

Weight

Aluminum 5.71 oz

Torsional Deflection

C 0.006 min/in.oz.

Radial Loads

C 7 oz./0.001 in. misalign

Uniform Cyclic Velocity

Many couplings do not transmit accurate angular position when misaligned – even under no load, and thus introduce errors as shown. (Note how little error is introduced by Fleximite compared to others.)

Why Our Couplings are Better

The function of every flexible coupling is to transmit power or motion control from one rotating shaft to another that is not perfectly aligned, without excessive bearing loads.

But since the requirements for transmitting power are not the same as they are for controlling motion, couplings designed to transmit power might well be unsuitable for motion control and vice versa.

For instance, a resilient coupling made with rubber or springs would work well delivering power because it could absorb vibration and/or shock loads, but would not work well controlling motion. Here’s why: In a motion control system, every component in the drive train (including couplings) affects the accuracy of the system by the amount of compliance (Wind-Up), Inertia, Friction, Backlash, etc. – things quite unimportant when transmitting power. A coupling that absorbs vibration must by definition, have Wind-Up, Inertia, or Backlash; whereas a true-motion control coupling must have no Backlash, low Inertia, and very low Wind-Up.

There are many applications, which are extremely sensitive to these factors. Today’s encoders, for instance, can discriminate down to a few seconds of arc. (That’s the width of a dime seen from 2 miles away) So you see how couplings can affect the success of your design.

Torsional Wind-Up is a very important factor. Notice in the graphs how outstanding RENBRANDT Couplings are.

Other manufacturers offer similar misalignment accommodation and low compliance – BUT NOT IN THE SAME PRODUCT.

The system must also be free from imbalance, vibration, and oscillation in order to prevent hunting – especially in closed-loop systems where a null balance is established between error signals. Since 1951 RENBRANDT has been building and improving Servo Couplings that provide reliability and long life free from maintenance – at moderate cost.

Sizes/Part Numbers

Item # Overall Diameter Hub 1 Diameter / Number Hub 2 Diameter / Number
B-501-1(F/E)-1(F/E) 2 1/2 Inch
63.5 mm
0.1875 Inch (B-501-1) 0.1875 Inch (B-501-1)
B-501-10(F/E)-1(F/E) 2 1/2 Inch
63.5 mm
0.75 Inch (B-501-10) 0.1875 Inch (B-501-1)
B-501-10(F/E)-10(F/E) 2 1/2 Inch
63.5 mm
0.75 Inch (B-501-10) 0.75 Inch (B-501-10)
B-501-10(F/E)-2(F/E) 2 1/2 Inch
63.5 mm
0.75 Inch (B-501-10) 0.25 Inch (B-501-2)
B-501-10(F/E)-3(F/E) 2 1/2 Inch
63.5 mm
0.75 Inch (B-501-10) 0.3125 Inch (B-501-3)
B-501-10(F/E)-4(F/E) 2 1/2 Inch
63.5 mm
0.75 Inch (B-501-10) 0.375 Inch (B-501-4)
B-501-10(F/E)-5(F/E) 2 1/2 Inch
63.5 mm
0.75 Inch (B-501-10) 0.4375 Inch (B-501-5)
B-501-10(F/E)-6(F/E) 2 1/2 Inch
63.5 mm
0.75 Inch (B-501-10) 0.5 Inch (B-501-6)
B-501-10(F/E)-7(F/E) 2 1/2 Inch
63.5 mm
0.75 Inch (B-501-10) 0.5625 Inch (B-501-7)
B-501-10(F/E)-8(F/E) 2 1/2 Inch
63.5 mm
0.75 Inch (B-501-10) 0.625 Inch (B-501-8)
B-501-10(F/E)-9(F/E) 2 1/2 Inch
63.5 mm
0.75 Inch (B-501-10) 0.6875 Inch (B-501-9)
B-501-11(F/E)-1(F/E) 2 1/2 Inch
63.5 mm
0.8125 Inch (B-501-11) 0.1875 Inch (B-501-1)
B-501-11(F/E)-10(F/E) 2 1/2 Inch
63.5 mm
0.8125 Inch (B-501-11) 0.75 Inch (B-501-10)
B-501-11(F/E)-11(F/E) 2 1/2 Inch
63.5 mm
0.8125 Inch (B-501-11) 0.8125 Inch (B-501-11)
B-501-11(F/E)-2(F/E) 2 1/2 Inch
63.5 mm
0.8125 Inch (B-501-11) 0.25 Inch (B-501-2)
B-501-11(F/E)-3(F/E) 2 1/2 Inch
63.5 mm
0.8125 Inch (B-501-11) 0.3125 Inch (B-501-3)
B-501-11(F/E)-4(F/E) 2 1/2 Inch
63.5 mm
0.8125 Inch (B-501-11) 0.375 Inch (B-501-4)
B-501-11(F/E)-5(F/E) 2 1/2 Inch
63.5 mm
0.8125 Inch (B-501-11) 0.4375 Inch (B-501-5)
B-501-11(F/E)-6(F/E) 2 1/2 Inch
63.5 mm
0.8125 Inch (B-501-11) 0.5 Inch (B-501-6)
B-501-11(F/E)-7(F/E) 2 1/2 Inch
63.5 mm
0.8125 Inch (B-501-11) 0.5625 Inch (B-501-7)
B-501-11(F/E)-8(F/E) 2 1/2 Inch
63.5 mm
0.8125 Inch (B-501-11) 0.625 Inch (B-501-8)
B-501-11(F/E)-9(F/E) 2 1/2 Inch
63.5 mm
0.8125 Inch (B-501-11) 0.6875 Inch (B-501-9)
B-501-12(F/E)-1(F/E) 2 1/2 Inch
63.5 mm
0.875 Inch (B-501-12) 0.1875 Inch (B-501-1)
B-501-12(F/E)-10(F/E) 2 1/2 Inch
63.5 mm
0.875 Inch (B-501-12) 0.75 Inch (B-501-10)
B-501-12(F/E)-11(F/E) 2 1/2 Inch
63.5 mm
0.875 Inch (B-501-12) 0.8125 Inch (B-501-11)
B-501-12(F/E)-12(F/E) 2 1/2 Inch
63.5 mm
0.875 Inch (B-501-12) 0.875 Inch (B-501-12)
B-501-12(F/E)-2(F/E) 2 1/2 Inch
63.5 mm
0.875 Inch (B-501-12) 0.25 Inch (B-501-2)
B-501-12(F/E)-3(F/E) 2 1/2 Inch
63.5 mm
0.875 Inch (B-501-12) 0.3125 Inch (B-501-3)
B-501-12(F/E)-4(F/E) 2 1/2 Inch
63.5 mm
0.875 Inch (B-501-12) 0.375 Inch (B-501-4)
B-501-12(F/E)-5(F/E) 2 1/2 Inch
63.5 mm
0.875 Inch (B-501-12) 0.4375 Inch (B-501-5)
B-501-12(F/E)-6(F/E) 2 1/2 Inch
63.5 mm
0.875 Inch (B-501-12) 0.5 Inch (B-501-6)
B-501-12(F/E)-7(F/E) 2 1/2 Inch
63.5 mm
0.875 Inch (B-501-12) 0.5625 Inch (B-501-7)
B-501-12(F/E)-8(F/E) 2 1/2 Inch
63.5 mm
0.875 Inch (B-501-12) 0.625 Inch (B-501-8)
B-501-12(F/E)-9(F/E) 2 1/2 Inch
63.5 mm
0.875 Inch (B-501-12) 0.6875 Inch (B-501-9)
B-501-13(F/E)-1(F/E) 2 1/2 Inch
63.5 mm
0.9375 Inch (B-501-13) 0.1875 Inch (B-501-1)
B-501-13(F/E)-10(F/E) 2 1/2 Inch
63.5 mm
0.9375 Inch (B-501-13) 0.75 Inch (B-501-10)
B-501-13(F/E)-11(F/E) 2 1/2 Inch
63.5 mm
0.9375 Inch (B-501-13) 0.8125 Inch (B-501-11)
B-501-13(F/E)-12(F/E) 2 1/2 Inch
63.5 mm
0.9375 Inch (B-501-13) 0.875 Inch (B-501-12)
B-501-13(F/E)-13(F/E) 2 1/2 Inch
63.5 mm
0.9375 Inch (B-501-13) 0.9375 Inch (B-501-13)
B-501-13(F/E)-2(F/E) 2 1/2 Inch
63.5 mm
0.9375 Inch (B-501-13) 0.25 Inch (B-501-2)
B-501-13(F/E)-3(F/E) 2 1/2 Inch
63.5 mm
0.9375 Inch (B-501-13) 0.3125 Inch (B-501-3)
B-501-13(F/E)-4(F/E) 2 1/2 Inch
63.5 mm
0.9375 Inch (B-501-13) 0.375 Inch (B-501-4)
B-501-13(F/E)-5(F/E) 2 1/2 Inch
63.5 mm
0.9375 Inch (B-501-13) 0.4375 Inch (B-501-5)
B-501-13(F/E)-6(F/E) 2 1/2 Inch
63.5 mm
0.9375 Inch (B-501-13) 0.5 Inch (B-501-6)
B-501-13(F/E)-7(F/E) 2 1/2 Inch
63.5 mm
0.9375 Inch (B-501-13) 0.5625 Inch (B-501-7)
B-501-13(F/E)-8(F/E) 2 1/2 Inch
63.5 mm
0.9375 Inch (B-501-13) 0.625 Inch (B-501-8)
B-501-13(F/E)-9(F/E) 2 1/2 Inch
63.5 mm
0.9375 Inch (B-501-13) 0.6875 Inch (B-501-9)
B-501-14(F/E)-1(F/E) 2 1/2 Inch
63.5 mm
1.000 Inch (B-501-14) 0.1875 (B-501-1)
B-501-14(F/E)-10(F/E) 2 1/2 Inch
63.5 mm
1.00 Inch (B-501-14) 0.750 Inch (B-501-10)
B-501-14(F/E)-11(F/E) 2 1/2 Inch
63.5 mm
1.00 Inch (B-501-14) 0.8125 Inch (B-501-11)
B-501-14(F/E)-12(F/E) 2 1/2 Inch
63.5 mm
1.00 Inch (B-501-14) 0.875 Inch (B-501-12)
B-501-14(F/E)-13(F/E) 2 1/2 Inch
63.5 mm
1.00 Inch (B-501-14) 0.9375 Inch (B-501-13)
B-501-14(F/E)-14(F/E) 2 1/2 Inch
63.5 mm
1.00 Inch (B-501-14 1.00 Inch (B-501-14)
B-501-14(F/E)-2(F/E) 2 1/2 Inch
63.5 mm
1.00 Inch (B-501-14) 0.250 Inch (B-501-2)
B-501-14(F/E)-3(F/E) 2 1/2 Inch
63.5 mm
1.00 Inch (B-501-14) 0.3125 Inch (B-501-3)
B-501-14(F/E)-4(F/E) 2 1/2 Inch
63.5 mm
1.00 Inch (B-501-14) 0.375 Inch (B-501-4)
B-501-14(F/E)-6(F/E) 2 1/2 Inch
63.5 mm
1.00Inch (B-501-14) 0.500 Inch (B-501-6)
B-501-14(F/E)-7(F/E) 2 1/2 Inch
63.5 mm
1.00 Inch (B-501-14) 0.5625 Inch (B-501-7)
B-501-14(F/E)-8(F/E) 2 1/2 Inch
63.5 mm
1.00 Inch (B-501-14) 0.625 Inch (B-501-8)
B-501-14(F/E)-9(F/E) 2 1/2 Inch
63.5 mm
1.00 Inch (B-501-14) 0.6875 Inch (B-501-9)
B-501-2(F/E)-1(F/E) 2 1/2 Inch
63.5 mm
0.25 Inch (B-501-2) 0.1875 Inch (B-501-1)
B-501-2(F/E)-2(F/E) 2 1/2 Inch
63.5 mm
0.25 Inch (B-501-2) 0.25 Inch (B-501-2)
B-501-3(F/E)-1(F/E) 2 1/2 Inch
63.5 mm
0.3125 Inch (B-501-3) 0.1875 Inch (B-501-1)
B-501-3(F/E)-2(F/E) 2 1/2 Inch
63.5 mm
0.3125 Inch (B-501-3) 0.25 Inch (B-501-2)
B-501-3(F/E)-3(F/E) 2 1/2 Inch
63.5 mm
0.3125 Inch (B-501-3) 0.3125 Inch (B-501-3)
B-501-4(F/E)-1(F/E) 2 1/2 Inch
63.5 mm
0.375 Inch (B-501-4) 0.1875 Inch (B-501-1)
B-501-4(F/E)-2(F/E) 2 1/2 Inch
63.5 mm
0.375 Inch (B-501-4) 0.25 Inch (B-501-2)
B-501-4(F/E)-3(F/E) 2 1/2 Inch
63.5 mm
0.375 Inch (B-501-4) 0.3125 Inch (B-501-3)
B-501-4(F/E)-4(F/E) 2 1/2 Inch
63.5 mm
0.375 Inch (B-501-4) 0.375 Inch (B-501-4)
B-501-5(F/E)-1(F/E) 2 1/2 Inch
63.5 mm
0.4375 Inch (B-501-5) 0.1875 Inch (B-501-1)
B-501-5(F/E)-2(F/E) 2 1/2 Inch
63.5 mm
0.4375 Inch (B-501-5) 0.25 Inch (B-501-2)
B-501-5(F/E)-3(F/E) 2 1/2 Inch
63.5 mm
0.4375 Inch (B-501-5) 0.3125 Inch (B-501-3)
B-501-5(F/E)-4(F/E) 2 1/2 Inch
63.5 mm
0.4375 Inch (B-501-5) 0.375 Inch (B-501-4)
B-501-5(F/E)-5(F/E) 2 1/2 Inch
63.5 mm
0.4375 Inch (B-501-5) 0.4375 Inch (B-501-5)
B-501-6(F/E)-1(F/E) 2 1/2 Inch
63.5 mm
0.5 Inch (B-501-6) 0.1875 Inch (B-501-1)
B-501-6(F/E)-2(F/E) 2 1/2 Inch
63.5 mm
0.5 Inch (B-501-6) 0.25 Inch (B-501-2)
B-501-6(F/E)-3(F/E) 2 1/2 Inch
63.5 mm
0.5 Inch (B-501-6) 0.3125 Inch (B-501-3)
B-501-6(F/E)-4(F/E) 2 1/2 Inch
63.5 mm
0.5 Inch (B-501-6) 0.375 Inch (B-501-4)
B-501-6(F/E)-5(F/E) 2 1/2 Inch
63.5 mm
0.5 Inch (B-501-6) 0.4375 Inch (B-501-5)
B-501-6(F/E)-6(F/E) 2 1/2 Inch
63.5 mm
0.5 Inch (B-501-6) 0.5 Inch (B-501-6)
B-501-7(F/E)-1(F/E) 2 1/2 Inch
63.5 mm
0.5625 Inch (B-501-7) 0.1875 Inch (B-501-1)
B-501-7(F/E)-2(F/E) 2 1/2 Inch
63.5 mm
0.5625 Inch (B-501-7) 0.25 Inch (B-501-2)
B-501-7(F/E)-3(F/E) 2 1/2 Inch
63.5 mm
0.5625 Inch (B-501-7) 0.3125 Inch (B-501-3)
B-501-7(F/E)-4(F/E) 2 1/2 Inch
63.5 mm
0.5625 Inch (B-501-7) 0.375 Inch (B-501-4)
B-501-7(F/E)-5(F/E) 2 1/2 Inch
63.5 mm
0.5625 Inch (B-501-7) 0.4375 Inch (B-501-5)
B-501-7(F/E)-6(F/E) 2 1/2 Inch
63.5 mm
0.5625 Inch (B-501-7) 0.5 Inch (B-501-6)
B-501-7(F/E)-7(F/E) 2 1/2 Inch
63.5 mm
0.5625 Inch (B-501-7) 0.5625 Inch (B-501-7)
B-501-8(F/E)-1(F/E) 2 1/2 Inch
63.5 mm
0.625 Inch (B-501-8) 0.1875 Inch (B-501-1)
B-501-8(F/E)-2(F/E) 2 1/2 Inch
63.5 mm
0.625 Inch (B-501-8) 0.25 Inch (B-501-2)
B-501-8(F/E)-3(F/E) 2 1/2 Inch
63.5 mm
0.625 Inch (B-501-8) 0.3125 Inch (B-501-3)
B-501-8(F/E)-4(F/E) 2 1/2 Inch
63.5 mm
0.625 Inch (B-501-8) 0.375 Inch (B-501-4)
B-501-8(F/E)-5(F/E) 2 1/2 Inch
63.5 mm
0.625 Inch (B-501-8) 0.4375 Inch (B-501-5)
B-501-8(F/E)-6(F/E) 2 1/2 Inch
63.5 mm
0.625 Inch (B-501-8) 0.5 Inch (B-501-6)
B-501-8(F/E)-7(F/E) 2 1/2 Inch
63.5 mm
0.625 Inch (B-501-8) 0.5625 Inch (B-501-7)
B-501-8(F/E)-8(F/E) 2 1/2 Inch
63.5 mm
0.625 Inch (B-501-8) 0.625 Inch (B-501-8)
B-501-9(F/E)-1(F/E) 2 1/2 Inch
63.5 mm
0.6875 Inch (B-501-9) 0.1875 Inch (B-501-1)
B-501-9(F/E)-2(F/E) 2 1/2 Inch
63.5 mm
0.6875 Inch (B-501-9) 0.25 Inch (B-501-2)
B-501-9(F/E)-3(F/E) 2 1/2 Inch
63.5 mm
0.6875 Inch (B-501-9) 0.3125 Inch (B-501-3)
B-501-9(F/E)-4(F/E) 2 1/2 Inch
63.5 mm
0.6875 Inch (B-501-9) 0.375 Inch (B-501-4)
B-501-9(F/E)-5(F/E) 2 1/2 Inch
63.5 mm
0.6875 Inch (B-501-9) 0.4375 Inch (B-501-5)
B-501-9(F/E)-6(F/E) 2 1/2 Inch
63.5 mm
0.6875 Inch (B-501-9) 0.5 Inch (B-501-6)
B-501-9(F/E)-7(F/E) 2 1/2 Inch
63.5 mm
0.6875 Inch (B-501-9) 0.5625 Inch (B-501-7)
B-501-9(F/E)-8(F/E) 2 1/2 Inch
63.5 mm
0.6875 Inch (B-501-9) 0.625 Inch (B-501-8)
B-501-9(F/E)-9(F/E) 2 1/2 Inch
63.5 mm
0.6875 Inch (B-501-9) 0.6875 Inch (B-501-9)
B501-14(F/E)-5(F/E) 2 1/2 Inch
63.5 mm
1.00 Inch (B-501-14) 0.4375 Inch (B-501-5)

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