Product Description
Manufactured within our specialized metallurgical equipment workshop in Jingjiang, our Tension Bridle Roll is a precision web-tensioning roller unit engineered for continuous strip processing lines-including cold rolling mills, continuous galvanizing lines (CGL), pickling lines, and continuous annealing lines (CAL). Leveraging 26 years of heavy fabrication experience and supplying global steel producers such as POSCO, JFE, and Baowu, we manufacture each Tension Bridle Roll in two-roll, three-roll, or four-roll configurations powered by individual AC vector motors or differential gearboxes. By generating controlled friction between the roll surfaces and the traveling strip, this high-performance Tension Bridle Roll establishes the exact strip tension differential required to eliminate strip wander, level rolled shape, and lower metal deformation resistance, providing cold-strip processors with a reliable tension-control core built for continuous high-speed production.
Applications
Continuous Pickling & Acid Lines: Creating upstream and downstream tension to break scale and ensure flat strip entry into acid baths.
Continuous Galvanizing & Color Coating Lines: Maintaining stable strip tension through zinc pots, drying ovens, and cooling towers.
Continuous Annealing Lines (CAL): Controlling strip tension inside vertical furnace loops to prevent strip tracking deviation and buckling.
Skin-Pass Mills & Tension Levelers: Supplying the high differential tension required to stretch-level strip and improve strip flatness.
Technical Specifications
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Design Standards |
Cold Rolling Strip Processing Machinery Standards, ISO 9001, JB/T 5000 |
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Roll Configurations |
2-roll, 3-roll, or 4-roll bridle sets (S-wrap configurations) |
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Strip Width Capacity |
600 mm to 2,200 mm; Strip thickness: 0.15 mm to 6.0 mm |
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Roll Diameters |
300 mm to 1,200 mm; Roll barrel lengths up to 2,600 mm |
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Strip Tension Rating |
10 kN to 350 kN (Controlled differential tension T) |
|
Line Speed |
Up to 1,200 m/min |
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Roll Body Construction |
Forged alloy steel (42CrMo) with internal stiffening ribs or dynamic-balancing hollow forgings |
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Surface Coating Options |
High-friction polyurethane elastomer, specialized nitrile rubber, chrome plating, or thermal-sprayed tungsten carbide (WC) |
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Balancing Standard |
Dynamic balancing to ISO 1940 Grade G2.5 / G1.6 |
Customization Capabilities
Surface Coating Tailoring: Polyurethane coatings (Shore A 85–95) for wet/dry chemical resistance, or tungsten carbide coatings for high wear resistance and non-marking performance on high-strength automotive sheets.
Drive System Configurations: Individual motor drives with regenerative braking, or mechanically coupled planetary differential drives.
Integrated Load-Cell Tensiometers: Pre-fitted with digital pillow-block load cells for closed-loop strip tension feedback.
Quick-Change Roll Chocks: Symmetrically designed roll chocks that facilitate rapid roll extraction during scheduled coating maintenance.
Zero MOQ Restriction: Custom engineered for individual roll replacement or delivered as complete multi-roll bridle machine stands.
Quality Control
Manufacturing Accreditations: ISO 9001:2015, ISO 14001:2015, and ISO 3834-2 welding quality management.
Full Process QR Code Traceability: Every forged roll body, coating batch, stub shaft, and spherical bearing carries an individual QR code linked to certified inspection records.
Non-Destructive Testing: 100% Ultrasonic Testing (UT) on roll forgings; 100% peel-adhesion and hardness verification across all elastomer and tungsten carbide coatings.
Precision Dynamic Balancing: High-speed dynamic balancing tests performed on all rolls to prevent vibration and resonance marks on light-gauge strips.
Heavy Ocean Packaging: Machined journals coated with rust preventives, roll bodies wrapped in multi-layer rubberized protective blankets, and crated in heavy structural timber boxes.
FAQ
Q: How do bridle rolls prevent strip slippage while protecting sensitive strip surfaces?
A: We select roll diameters that maintain sufficient contact wrap angles (Euler friction equation) and apply custom polyurethane or fine-ground tungsten carbide coatings. This delivers high friction coefficients without scratching cold-rolled or coated surfaces.
Q: What is the typical fabrication lead time for a set of tension bridle rolls?
A: Fabrication and precision coating application typically require 3 to 4 months from drawing sign-off to delivery.
Q: What warranty coverage do you provide?
A: We provide an 18-month warranty from site arrival or 12 months from commercial operation (whichever comes first).
Q: What payment terms are accepted?
A: Standard commercial terms are 30% advance deposit, 40% manufacturing milestone payment, and 30% balance prior to export shipment, payable in USD, EUR, or RMB.
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