{"id":551,"date":"2025-09-25T14:43:25","date_gmt":"2025-09-25T14:43:25","guid":{"rendered":"https:\/\/xtech-eng.com\/?post_type=product&p=551"},"modified":"2025-12-17T09:15:27","modified_gmt":"2025-12-17T09:15:27","slug":"w-series","status":"publish","type":"product","link":"https:\/\/xtech-eng.com\/?product=w-series&lang=en","title":{"rendered":"Nippon Gear_W series"},"content":{"rendered":"

W Series Worm Gear Actuators: Self-Locking Safety Solutions for Rising Stem Valves<\/strong><\/h1>\n

The W Series<\/b> is a specialized line of worm gear actuators by Nippon Gear, designed for multi-turn applications. With its excellent self-locking<\/b> characteristics, this series is the ideal choice for gate valves, sluice gates, and rising stem valves that require significant thrust for safe operation.<\/p>\n

Key Highlights of the W Series<\/strong><\/h2>\n

1. Intelligent Self-Locking Mechanism<\/strong><\/h3>\n

This is the core advantage of the worm gear design. The mechanism completely prevents the valve stem from back-driving due to flow pressure or the weight of the valve gate. This ensures the valve remains securely in its desired position, enhancing absolute system safety.<\/p>\n

2. Effortless Operation with “Hammer Blow”<\/strong><\/h3>\n

Similar to Nippon Gear’s high-end lines, the W Series integrates the Hammer Blow<\/b> effect. This feature allows operators to easily dislodge jammed valves or ensure a tight seal without needing excessive initial force.<\/p>\n

3. Modular Design \u2013 Simplified Maintenance<\/strong><\/h3>\n
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  • \n

    Two-Piece Drive Sleeve:<\/b> The smart design allows technicians to quickly remove the stem nut from the actuator. Machining threads or replacing components is simpler than ever.<\/p>\n<\/li>\n

  • \n

    High Durability:<\/b> Featuring a fully sealed construction pre-lubricated with Extreme Pressure (EP)<\/b> grease, the units are wear-resistant and ready for immediate deployment.<\/p>\n<\/li>\n<\/ul>\n

    4. Flexible Upgrade Capability<\/strong><\/h3>\n
      \n
    • \n

      Electric Actuator Integration:<\/b> The W Series can function as a secondary reduction gearbox when coupled with electric actuators such as the SMB, JMB, or L120<\/b> series to automate processes.<\/p>\n<\/li>\n

    • \n

      Dual Shaft Option:<\/b> Expands installation possibilities for handwheels or motors in multiple positions, perfect for restricted spaces.<\/p>\n<\/li>\n<\/ul>\n

      Practical Applications<\/strong><\/h2>\n

      The W Series is a trusted solution in the following sectors:<\/p>\n

        \n
      • \n

        Water & Wastewater Systems:<\/b> Operating large gate valves and flood control sluice gates.<\/p>\n<\/li>\n

      • \n

        Heavy Industry:<\/b> Rising stem valves in steel mills and chemical plants.<\/p>\n<\/li>\n

      • \n

        Irrigation Infrastructure:<\/b> Flow control in high-pressure diversion channels.<\/p>\n<\/li>\n<\/ul>\n

        W Series Technical Specifications<\/strong><\/h3>\n

        The W Series consists of 5 unit sizes, optimized for various load ranges:<\/p>\n

        \n
        \n
        \n
        \n\n\n\n\n\n\n\n\n\n
        Model<\/span><\/td>\nMax Thrust (kN)<\/span><\/td>\nMax Torque (N\u00b7m)<\/span><\/td>\nGear Ratio (Example)<\/span><\/td>\nMax Stem Dia. (mm)<\/span><\/td>\n<\/tr>\n<\/thead>\n
        W-0<\/b><\/span><\/td>\n105<\/span><\/td>\n640<\/span><\/td>\n47:3<\/span><\/td>\n58<\/span><\/td>\n<\/tr>\n
        W-1<\/b><\/span><\/td>\n200<\/span><\/td>\n1,150<\/span><\/td>\n29:2<\/span><\/td>\n67<\/span><\/td>\n<\/tr>\n
        W-2<\/b><\/span><\/td>\n320<\/span><\/td>\n2,500<\/span><\/td>\n33:2<\/span><\/td>\n89<\/span><\/td>\n<\/tr>\n
        W-3<\/b><\/span><\/td>\n620<\/span><\/td>\n5,700<\/span><\/td>\n31:3<\/span><\/td>\n120<\/span><\/td>\n<\/tr>\n
        W-4<\/b><\/span><\/td>\n1,100<\/span><\/td>\n10,000<\/span><\/td>\n38:3<\/span><\/td>\n152<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

        Additional Options<\/strong><\/h3>\n
          \n
        • \n

          Position Indicators & Limit Switches:<\/b> Supports on-site valve status monitoring or provides feedback signals to a remote control center.<\/p>\n<\/li>\n

        • \n

          Variable Efficiency:<\/b> Depending on the gear ratio, efficiency ranges from 0.20 to 0.55<\/b>, specifically optimized for reliable self-locking performance.<\/p>\n<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"

          W Series Worm Gear Actuators: Self-Locking Safety Solutions for Rising Stem Valves The W Series is a specialized line of worm gear actuators by Nippon Gear, designed for multi-turn applications. With its excellent self-locking characteristics, this series is the ideal choice for gate valves, sluice gates, and rising stem valves that require significant thrust for…<\/p>\n","protected":false},"featured_media":996,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[245,247],"product_tag":[],"class_list":{"0":"post-551","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-manual-actuator-limitorque","7":"product_cat-multi-turn-type-en-manual-actuator-limitorque","9":"first","10":"instock","11":"shipping-taxable","12":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/xtech-eng.com\/index.php?rest_route=\/wp\/v2\/product\/551","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/xtech-eng.com\/index.php?rest_route=\/wp\/v2\/product"}],"about":[{"href":"https:\/\/xtech-eng.com\/index.php?rest_route=\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/xtech-eng.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=551"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/xtech-eng.com\/index.php?rest_route=\/wp\/v2\/media\/996"}],"wp:attachment":[{"href":"https:\/\/xtech-eng.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=551"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/xtech-eng.com\/index.php?rest_route=%2Fwp%2Fv2%2Fproduct_brand&post=551"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/xtech-eng.com\/index.php?rest_route=%2Fwp%2Fv2%2Fproduct_cat&post=551"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/xtech-eng.com\/index.php?rest_route=%2Fwp%2Fv2%2Fproduct_tag&post=551"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}