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JC44-14-A JD44/70-98R JC44-12-A

In stock
Ruland JC44-14-A JD44/70-98R JC44-12-A, 7/8" x 3/4" Jaw Coupling Bundle, Aluminum, Clamp Style Hubs, 2.750" (69.9mm) OD, 3.674" (93.3mm) Length

PRODUCT SPECIFICATIONS

This Ruland jaw coupling bundle contains JC44-14-A, JD44/70-98R, and JC44-12-A. To make a complete assembly you must specify two hubs and one spider. All parts have an OD of 2.750" (69.9mm) and assembled length of 3.674" (93.3mm). JC44-14-A is a clamp hub with a 0.8750" bore. JD44/70-98R is a 98 Shore A spider. JC44-12-A is a clamp hub with a 0.7500" bore. The dampening characteristics of this zero-backlash jaw coupling reduce settling time and shock loads making it well suited for systems that have agressive acceleration/deceleration profiles. Ruland jaw couplings have a balanced design for reduced vibration at speeds up to 8,000 RPM. Hardware is metric and tests beyond DIN 912 12.9 standards for maximum torque capabilities. Hubs are manufactured in our Marlborough, MA factory under strict controls using proprietary processes from bar stock that is sourced exclusively from North American mills. All components in this bundle are RoHS3 and REACH compliant.

PRODUCT SPECIFICATIONS

Dimensions

Bore (B1) Larger inner diameter. Should match nominal shaft diameter.

0.8750 in

Small Bore (B2) Smaller inner diameter. Should match nominal shaft diameter.

0.7500 in

Outer Diameter (OD)

2.750 in (69.9 mm)

Length (L)

3.674 in (93.3 mm)

CERTIFICATIONS/STANDARDS
ISO 9001:2015

Certified

Conflict Minerals

Compliant

RoHS3

Compliant

REACH

Compliant

Dimensions

Bore (B1)

0.8750 in

B1 Max Shaft Penetration

1.300 in

Outer Diameter (OD)

2.750 in (69.9 mm)

Bore Tolerance

+0.001 in / -0.000 in

Hub Width (LH)

1.300 in

Length (L)

3.674 in (93.3 mm)

Recommended Shaft Tolerance

+0.0000 in / -0.0005 in

Fastening Hardware

Forged Clamp Screw

M8

Number of Screws

1 ea

Screw Material

Alloy Steel

Screw Finish

Black Oxide

Hex Wrench Size

6.0 mm

Seating Torque

39 Nm

Performance Specifications

Torque Specifications

Torque ratings vary with insert selection

Misalignment

Misalignment ratings vary with insert selection

Maximum Speed

8,000 RPM

Moment of Inertia

0.803 lb-in2

Full Bearing Support Required?

Yes

Recommended Inserts

JD44/70-98R, JD44/70-92Y

Zero-Backlash?

Yes

Balanced Design

Yes

Fail Safe?

Yes

Additional Information

Weight (lbs)

0.713752

Temperature

-10°F to 180°F (-23°C to 82°C)

Material Specification

2024-T351 Aluminum Bar

Finish

Bright

Finish Specification

Bright, No Plating

Manufacturer

Ruland Manufacturing

Recommended Gap Between Hubs

0.074 in (1.88 mm)

Country of Origin

USA

UPC

65432939426

UNSPC

31163011

Tariff Code

8483.60.8000

Product Notes

Note 1

Stainless steel hubs are available upon request.

Note 2

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

Note 3

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. Please consult technical support for more assistance.

Prop 65

WARNING This product can expose you to the chemical Ethylene Thiourea, known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Dimensions

Outer Diameter (OD)

2.750 in (69.9 mm)

Performance Specifications

Rated Torque

1,320 in-lb (149.14 Nm)

Angular Misalignment

0.8°

Peak Torque

2,640 in-lb (298.28 Nm)

Parallel Misalignment

0.008 in (0.20 mm)

Torsional Stiffness

1600 lb-in/Deg (180.8 Nm/Deg)

Moment of Inertia

0.113995 lb-in2 (3.336 X 10-5 kg-m2)

Axial Motion

0.060 in (1.52 mm)

Maximum Speed

8,000 RPM

Full Bearing Support Required?

Yes

Zero-Backlash?

Yes

Approximate Assembly Force (lbf)

350 lbf

Bearing Load at Max Parallel Misalignment (lbf)

95 lbf

Additional Information

Weight (lbs)

0.128900

Temperature

-10°F to 180°F (-23°C to 82°C)

Material Specification

Polyurethane 98 Shore A RED

Finish Specification

Plain

Manufacturer

Ruland Manufacturing

UPC

634529409060

Country of Origin

USA

Tariff Code

8483.60.8000

UNSPC

31163011

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.

Dimensions

Bore (B1)

0.7500 in

B1 Max Shaft Penetration

1.300 in

Outer Diameter (OD)

2.750 in (69.9 mm)

Bore Tolerance

+0.001 in / -0.000 in

Hub Width (LH)

1.300 in

Length (L)

3.674 in (93.3 mm)

Recommended Shaft Tolerance

+0.0000 in / -0.0005 in

Fastening Hardware

Forged Clamp Screw

M8

Number of Screws

1 ea

Screw Material

Alloy Steel

Screw Finish

Black Oxide

Hex Wrench Size

6.0 mm

Seating Torque

39 Nm

Performance Specifications

Torque Specifications

Torque ratings vary with insert selection

Misalignment

Misalignment ratings vary with insert selection

Maximum Speed

8,000 RPM

Moment of Inertia

0.806 lb-in2

Full Bearing Support Required?

Yes

Recommended Inserts

JD44/70-98R, JD44/70-92Y

Zero-Backlash?

Yes

Balanced Design

Yes

Fail Safe?

Yes

Additional Information

Weight (lbs)

0.732200

Temperature

-10°F to 180°F (-23°C to 82°C)

Material Specification

2024-T351 Aluminum Bar

Finish

Bright

Finish Specification

Bright, No Plating

Manufacturer

Ruland Manufacturing

Recommended Gap Between Hubs

0.074 in (1.88 mm)

Country of Origin

USA

UPC

65432939425

UNSPC

31163011

Tariff Code

8483.60.8000

Product Notes

Note 1

Stainless steel hubs are available upon request.

Note 2

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

Note 3

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. Please consult technical support for more assistance.

Prop 65

WARNING This product can expose you to the chemical Ethylene Thiourea, known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

CUSTOMER REVIEWS

JC44-14-A JD44/70-98R JC44-12-A
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