{"product_id":"njtx-171","title":"Aluminum Alloy Heart-Shaped Double Pulley Series","description":"\u003cp\u003eA professional series of heart-shaped tandem pulleys designed for Adventure Parks, forest high ropes courses, zip lines, and rope rescue traverses. The pulleys feature high-wear-resistant stainless steel sheaves that are compatible with both high-strength nylon ropes and rigid steel cables, offering exceptional abrasion resistance. Equipped with precision-sealed ball bearings, they provide smooth, low-friction gliding with a mechanical efficiency of over 90%. The attachment holes are specially enlarged with chamfered edges, allowing various auto-locking carabiners and their sleeves to pass through directly, making the setup of lanyards and backup fall arrest systems extremely convenient.\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\u003eUniversal Stainless Steel Sheaves for Steel Cable \/ Fiber Rope\u003c\/b\u003e: High-hardness stainless steel pulleys are durable, wear-resistant, and resistant to cutting and scarring, making them fully compatible with both metal cables and fiber ropes ≤13mm.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003ePrecision-Sealed Ball Bearings\u003c\/b\u003e: Featuring high rotational speed and low friction, these bearings offer a mechanical transmission efficiency of ≥90%, ensuring stable and quiet performance on long-span zip lines and horizontal traverses.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003eUnobstructed Carabiner Passage\u003c\/b\u003e: Enlarged holes allow large three-stage auto-locking gates and sleeves to pass through directly, eliminating the need for tedious unhooking and ensuring smooth transitions.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003eHeart-Shaped Anti-Tilt Geometry\u003c\/b\u003e: The dual-sheave tandem design accurately locks onto the track, preventing tilting or jamming during movement and providing excellent balance.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003eDual Safety Attachment Layout\u003c\/b\u003e: Provides a main travel attachment point and a backup fall arrest eyelet, complying with redundancy protection standards for outdoor high-altitude rope activities.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003ch3\u003eExplanation of the Two Hole Configurations\u003c\/h3\u003e\n\u003cul\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003e【Tri-Eye Heart-Shaped Tandem Pulley (4-Hole \/ Professional Flagship Model)】\u003c\/b\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e\n\n\u003cp\u003eEquipped with 4 attachment holes for high versatility. Features 2 enlarged main carabiner holes in the center (allowing auto-locking sleeves to pass through smoothly), with additional auxiliary positioning holes at the top and bottom for convenient simultaneous connection of main lanyards, backup tow lines, and braking systems.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003eStrength: Breaking Strength 36kN | Weight: Approx. 313g | Sheave Diameter: 27mm\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003e【Heart-Shaped Tandem Pulley (Classic Two-Hole Model - Black \/ Silver)】\u003c\/b\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e\n\n\u003cp\u003eClassic heart-shaped design with upper and lower dual holes. The top hole is 18mm for positioning, and the bottom hole is an enlarged 20mm (supporting auto-locking gate passage). Weighing only about 266g, it is exceptionally compact and agile.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003eStrength: Working Load 22kN | Weight: Approx. 266g | Sheave Diameter: 26mm\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\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 Aerospace-grade Aluminum Alloy (side plates), Stainless Steel (sheaves, axle)\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003eApplicable Media\u003c\/b\u003e: Metal cables, fiber ropes (rope diameter ≤ 13mm)\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\u003eMechanical Efficiency\u003c\/b\u003e: ≥ 90%\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":"Double-hole heart-shaped (Black \/ 2 holes \/ 22kN)","offer_id":45829408063623,"sku":"J047A","price":129.0,"currency_code":"HKD","in_stock":true},{"title":"Double-Hole Heart Shape (Silver \/ 2 holes \/ 22kN)","offer_id":45843964035207,"sku":"J047B","price":129.0,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0760\/1740\/1991\/files\/Page15_Img03_IM238_bea48772-5381-429d-908a-c76a21f582f0.jpg?v=1789033487","url":"https:\/\/treeholic.co\/en\/products\/njtx-171","provider":"Treeholic","version":"1.0","type":"link"}