JC12-3-A

$23.56 ea

Quantity	Price (USD)
1	$23.56 ea
20	$14.14 ea
50	$11.78 ea
100	$10.60 ea
200	Request Quote

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Ruland JC12-3-A, 3/16" Jaw Coupling Hub, Aluminum, Clamp Style, 0.750" OD, 0.385" Length

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PRODUCT SPECIFICATIONS

Ruland JC12-3-A is a zero-backlash jaw coupling hub with a 3/16" bore, 0.750" OD, and 0.385" length. It is a component in a three-piece design consisiting 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. Spiders are available in three durometers allowing the user to tailor the performance of the coupling to their application. 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. JC12-3-A is machined from bar stock that is sourced exclusively from North American mills and is RoHS2 and REACH compliant. It is manufactured in our Marlborough, MA factory under strict controls using proprietary processes.

PRODUCT SPECIFICATIONS

Dimensions
Bore B	0.188 in	B1 Shaft Penetration	0.385 in
Outer Diameter OD	0.750 in	Bore Tolerance	+.001 in / -.000 in
Hub Width LH	0.385 in	Length L	1.070 in
Fastening Hardware
Forged Clamp Screw	M2.5	Number of Screws	1 ea
Screw Material	Alloy Steel	Screw Finish	Black Oxide
Hex Wrench Size	2.0 mm	Seating Torque	1.21 Nm
Performance Specifications
Maximum Speed	8,000 RPM
Additional Information
Weight (lbs.)	0.0170	Temperature	-10°F to 180°F -23°C to 82°C
Material Specification	2024-T351 Aluminum Bar	Finish	Bright
Finish Specification	Bright	Manufacturer	Ruland Manufacturing
UPC	63452906833	Country of Origin	USA
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. 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	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.