{"product_id":"boston-gear-fc20-3-4-jaw-coupling-hub-with-keyed-bore","title":"Boston Gear FC20-3 4 Jaw Coupling Hub With Keyed Bore","description":"\u003cdiv\u003e\u003cp\u003eThe Boston Gear FC20 series 3-jaw coupling hub is a steel, half-hub designed for FC20 straight-jaw couplings with a 3\/4 in bore. It features a 1.7500 in hub diameter and a hub length of about 1-1\/8 in, delivering a compact footprint for moderate-speed drives. The 3\/4 in bore accommodates a 3\/4 in shaft and includes a precision keyway sized 3\/16 in wide by 3\/32 in deep for positive torque transmission, paired with a setscrew for secure clamping in the mating half. Constructed from alloy steel, the hub tolerances are geared toward high-torque performance, and the FC20 family is rated up to approximately 1,750 RPM, making it suitable for servo or stepper-driven applications requiring a rigid, aligned connection. Boston Gear also offers FC20 hubs in additional bore sizes and provides custom bore options on request.\u003c\/p\u003e\u003c\/div\u003e","brand":"Boston","offers":[{"title":"Used Surplus - Excellent Condition","offer_id":51677212475694,"sku":null,"price":58.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_bc184d77-fa35-4e77-a1ee-bfd0f71850ac.jpg?v=1769559464","url":"https:\/\/plgautomation.com\/products\/boston-gear-fc20-3-4-jaw-coupling-hub-with-keyed-bore","provider":"PLG Automation ","version":"1.0","type":"link"}