{"product_id":"njtx-173","title":"Aluminum Alloy 360° Universal Side-Opening Ball Bearing Pulley","description":"\u003cp\u003eA professional swivel side-opening pulley designed specifically for complex rope rescue, hauling systems, and high-altitude zip lines. It integrates a 360° smooth-rotating swivel that self-adjusts to the direction of force, effectively eliminating edge wear and rope twisting. The side plate features a double-action locking mechanism, allowing for safe installation and removal at any point on the rope, even while under tension. Equipped with sealed precision ball bearings, it delivers a mechanical efficiency of over 90%.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eKey Features\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003e360° Swivel Self-Adjusting Axis\u003c\/b\u003e: The pulley automatically aligns  with the angle of tension, preventing rope twisting, tangling, or uneven edge wear during hauling, and ensuring smoother operation on traversing zip lines.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003eDual-Action Safety Locking Side Plate\u003c\/b\u003e: Requires a two-step pressing action to open, preventing accidental opening due to impact or friction during operation. Allows for mid-line installation and removal on tensioned ropes without disconnecting the carabiner.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003eSealed Precision Ball Bearings\u003c\/b\u003e: High rotation speed with low friction, providing a mechanical efficiency of ≥90%, significantly reducing hauling resistance and extending service life.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003eExtra-Large Attachment Hole\u003c\/b\u003e: The main attachment point features a 24mm diameter, allowing for up to three carabiners to be clipped in simultaneously, or direct integration with webbing or slings.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003eHigh-Load Capacity\u003c\/b\u003e: Working Load Limit (WLL) of 22kN, Minimum Breaking Strength (MBS) of 36kN, and compatible with ropes up to 13mm in diameter.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003ch3\u003eSingle and Double Pulley Structure Description\u003c\/h3\u003e\n\u003cul\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003e[Swivel Single Pulley]\u003c\/b\u003e: Weighs approximately 290g; compact and agile structure suitable for single-line redirection, mobile anchors, and zip line sliding.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003e[Swivel Double Pulley]\u003c\/b\u003e: Weighs approximately 460g; features a parallel double-pulley structure. Includes a 24mm large hole at the top and an additional 16mm auxiliary attachment hole at the bottom, ideal for connecting hand ascenders to build mechanical advantage systems (such as 4:1 or 5:1 hauling systems) or for dual-rope configurations.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eSpecifications\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003eMain Material\u003c\/b\u003e: 7075 Aircraft-grade Aluminum Alloy (Body\/Side Plate), Stainless Steel (Sheave\/Axle)\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003eStrength Rating\u003c\/b\u003e: WLL 22kN | MBS 36kN\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003eMechanical Efficiency\u003c\/b\u003e: ≥ 90%\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003eBearing Type\u003c\/b\u003e: Sealed Ball Bearing\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003eCompatible Rope Diameter\u003c\/b\u003e: ≤ 13mm\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003eSheave Specifications\u003c\/b\u003e: 37mm Center Diameter\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003eTesting Standard\u003c\/b\u003e: XF494-2023\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e","brand":"NJTX","offers":[{"title":"Universal swivel pulley","offer_id":45810007277703,"sku":"J077","price":395.0,"currency_code":"HKD","in_stock":true},{"title":"Universal double pulley","offer_id":45829380178055,"sku":"J078","price":550.0,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0760\/1740\/1991\/files\/Page15_Img01_IM236_16ffac9c-a2da-4757-8ae0-1947004275d9.jpg?v=1789032985","url":"https:\/\/treeholic.co\/en\/products\/njtx-173","provider":"Treeholic","version":"1.0","type":"link"}