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JD21/33-92Y

$18.76
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1 $18.76
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Ruland JD21/33-92Y, Jaw Coupling Spider, 92 Shore A Yellow, 1.313" (33.3mm) OD, Balance of Torque and Dampening

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PRODUCT SPECIFICATIONS

Ruland JD21/33-92Y is a zero-backlash jaw coupling spider designed to fit Ruland hubs that have an. It is a component in a three-piece design consisting of two aluminum hubs and an elastomeric insert called the spider creating a lightweight low inertia coupling capable of speeds up to 8,000 RPM. This three-piece design allows for a highly customizable coupling that easily combines clamp or set screw hubs with inch, metric, keyed, and keyless bores. JD21/33-92Y is made from polyurethane and has 85 Shore A hardness allowing for a good balance of dampening and torque capacity. Ruland jaw couplings have a balanced design for reduced vibration at high speeds. Hardware is metric and tests beyond DIN 912 12.9 standards for maximum torque capabilities. JD21/33-92Y is RoHS3 and REACH compliant.

PRODUCT SPECIFICATIONS

Dimensions

Outer Diameter (OD)

1.313 in (33.3 mm)

Performance Specifications

Rated Torque Recommended torque based on slippage on the shaft.

35 in-lb (3.96 Nm)

Angular Misalignment Max angle of the shaft axes relative to each other.

0.9°

Peak Torque The torque where the insert will permanently deform and lose elasticity. This will result in loss of zero-backlash.

70 in-lb (7.9 Nm)

Parallel Misalignment Shafts are parallel to each other, but not in-line with each other. They are offset.

0.005 in (0.13 mm)

Torsional Stiffness Measures the rigidity of the coupling. The more rigid the coupling, the less windup it will have.

22.2 lb-in/Deg (2.52 Nm/Deg)

Moment of Inertia

0.00275 lb-in2 (8.042 X 10-7 kg-m2)

Axial Motion The amount shafts can move closer to or away from each other. This is meant for thermal expansion of the shafts. No axial force can be placed on the coupling.

0.030 in (0.76 mm)

Maximum Speed

8,000 RPM

Full Bearing Support Required? Full bearing support is a bearing in close proximity to both sides of the coupling to prevent axial loads that could result in rapid coupling failure.

Yes

Zero-Backlash? Zero-backlash ensures there is no loss of motion during operation.

Yes

Additional Information

Weight (lbs)

0.013800

Temperature Minimum and maximum operating temperature. Operating temperature includes ambient temperature plus or minus factors such as system heat generated during operation, washdown, vacuum, etc...

-10°F to 180°F (-23°C to 82°C)

Material Specification

Polyurethane 92 Shore A YELLOW

Finish Specification Surface finish specifications.

Plain

Manufacturer

Ruland Manufacturing

UPC

634529068960

Country of Origin

USA

Tariff Code

8483.60.8000

UNSPC Code used to identify products to standardize nomenclature around the world.

31163011

Recommended Gap Between Hubs The recommended installation gap between the two hubs.

0.030 in (0.75 mm)

Product Notes

Note 1

Performance ratings are for guidance only. The user must determine suitability for a particular application.

Note 2

Torque ratings for the couplings are based on the physical limitations/failure point of the spiders. Under normal/typical conditions the hubs are capable of holding up to the nominal torque of the spiders. In some cases, especially when the smallest standard bores are used or where shafts are undersized, slippage on the shaft is possible below the nominal torque of the spiders. Keyways are available to provide additional torque capacity in the shaft/hub connection when required. Please consult technical support for more assistance.

Prop 65 Required for the US State of California only.

This product does not require a warning.

CERTIFICATIONS/STANDARDS
ISO 9001:2015

Certified

Conflict Minerals

Compliant

RoHS3

Compliant

REACH

Compliant

Installation Instructions

  1. Align the bores of the jaw coupling hubs on the shafts that are to be joined and determine if the misalignment parameters are within the limits of the coupling.(Angular Misialignment: 0.9 deg, Parallel Misalignment: 0.005 in (0.13 mm), Axial Motion: 0.03 in (0.76 mm))
  2. Fully tighten the screw(s) on the first hub to the recommended seating torque using a hex torque wrench.
  3. Insert a spider into the jaws of the first hub until the raised points contact the base of the hub.
  4. Insert the jaws of the second hub into the spider openings until the raised points contact the base of the second hub. Some force will be required to insert the second hub. This is normal.
  5. Assure that a gap is maintained between the two hubs so there is no metal to metal contact. Fully tighten the screw(s) on the second hub to the recommended seating torque.

CUSTOMER REVIEWS

JD21/33-92Y
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