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Metal coupling flange with 7/8 inch bore, carbon steel finish, compact cylindrical shape

Tb Wood'S

Tb Wood'S Sure-Flex Sleeve Coupling Flange 3J Bore 7/8 in

SKU CH-E3NJ-YPY0Q

Connects shafts in compressors, conveyors, motors and pumps up to 9,200 RPM and 78 in-lb torque with a 7/8 in round keyed bore and carbon steel flange hub

  • Handles up to 9,200 RPM for high-speed drives
  • Transmits 78 in-lb torque for reliable power transfer
  • Precision bore tolerance +0.0005/+0.0015 in ensures secure shaft fit
  • Carbon steel hub resists wear in demanding applications
  • Suits compressors, conveyors, motors and pumps

Coupling Flange 3J 7/8 in Bore

The TB WOODS Sure-Flex sleeve coupling flange fits a 7/8 in round keyed shaft and carries a maximum torque of 78 in-lb. Rated for speeds up to 9,200 RPM, it serves compressors, conveyors, motors and pumps in general power-transmission duty.

Hub Fit and Alignment

Carbon-steel flange hub measures 1 1/2 in diameter with a 13/32 in body length and a 51/64 in length through bore. Bore tolerance of +.0005 in to +.0015 in demands careful shaft sizing; oversize or undersize shafts cause premature wear or slippage.

Sustained Operation

Continuous running at rated torque and speed keeps the hub within its design envelope without additional cooling. Exceeding 78 in-lb or 9,200 RPM accelerates fatigue and reduces service life.

Highlights

  • Handles up to 9,200 RPM for high-speed drives
  • Transmits 78 in-lb torque for reliable power transfer
  • Precision bore tolerance +0.0005/+0.0015 in ensures secure shaft fit
  • Carbon steel hub resists wear in demanding applications
  • Suits compressors, conveyors, motors and pumps

Specifications

No published specifications for this item yet.

Questions about this item

How do I confirm the 3J flange is installed correctly on my 7/8 in shaft?

Verify the bore tolerance of +0.0005 in to +0.0015 in with a micrometer, ensure the key seats fully in the round keyed bore, and confirm the hub body length of 13/32 in sits flush against the shaft shoulder before tightening.

What components come with the 3J coupling flange and what must I source separately?

The package includes the carbon steel flange hub with 7/8 in bore, 1 1/2 in hub diameter, and 51/64 in length through bore. You must purchase the matching 3J sleeve element and the second flange hub for the driven shaft separately.

Which Sure-Flex coupling size matches a 9,200 RPM compressor drive?

Choose the size 3J flange rated for 9,200 RPM maximum speed and 78 in-lb maximum torque. Ensure the driven shaft uses the same 3J size sleeve and a compatible flange hub for its bore diameter.

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