{"product_id":"boston-gear-f221s-ph-4-b5-h1-gear-reducer","title":"Boston Gear F221S-PH-4-B5-H1 Gear Reducer","description":"\u003cdiv\u003e\u003cp\u003eBoston Gear F221S-PH-4-B5-H1 Gear Reducer is a 200 Series Optimount Helical Gear Speed Reducer designed for shaft-mount installation. It provides a 4:1 reduction ratio, is rated for up to 1 hp input, and yields an output speed of about 431 rpm when fed with 1,750 rpm input, delivering roughly 289 in-lb of torque. This model is part of the Boston Gear family now under Altra Industrial Motion, combining the space-efficient shaft-mount format with the smooth performance of a helical gear train for reliable speed reduction in compact layouts. With its compact form and proven efficiency, the F221S-PH-4-B5-H1 is suitable for light-duty automation tasks where precise speed control and predictable torque transfer are essential.\u003c\/p\u003e\u003c\/div\u003e","brand":"Boston","offers":[{"title":"New","offer_id":51677219422510,"sku":null,"price":870.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_79ccae42-1506-40a6-a200-d8188ce56ffd.jpg?v=1769559588","url":"https:\/\/plgautomation.com\/products\/boston-gear-f221s-ph-4-b5-h1-gear-reducer","provider":"PLG Automation ","version":"1.0","type":"link"}