20-Stand Servo C Purlin Roll Forming Machine | Jinbolida, Shandong, China

Jinbolida 20-Stand Servo C Purlin Roll Forming Machine – Automatic Size Change for C50–160 Solar Brackets

The Jinbolida 20-Stand C Purlin Roll Forming Machine is an intelligent cold roll forming machine built specifically for C-section photovoltaic brackets. Its servo adjustment system changes the web width and flange height automatically, so switching between C-profile sizes takes minutes rather than hours, which makes it ideal for manufacturers producing many bracket sizes. It covers the mainstream solar range of C50 to C160, runs at 40 m/min (up to 50 m/min), and holds tight tolerances on straightness, twist and cut length. Heavy-duty arch-type stands and a heavy-duty gearbox give the rigidity for stable, long-term running.

Key Features

• Designed specifically for C-section solar mounting brackets
• Servo motors automatically adjust web width and flange height for fast size changes
• Covers C50–C160 web widths, the mainstream range for PV brackets
• 20 forming stands for accurate, stable forming
• Heavy-duty arch-type stands and heavy-duty gearbox for high rigidity
• Seven-roll levelling mechanism for flat strip entry
• Anti-scratch auxiliary wheels to protect the steel surface
• Turk's head straightener for final straightness correction
• Burr-free cut ends and scratch-free surfaces

Forming Process

• Feeding (pinch-roll feed)
• Levelling (seven-roll leveller)
• Guiding (left and right edge guides)
• First-stage forming
• Second-stage forming
• Over-bending to compensate for springback
• Shaping
• Straightness and twist correction (Turk's head)

Technical Specifications

• Profile: C-section (C purlin) for photovoltaic brackets
• Web width (bottom width): 50–160 mm
• Flange height (waist height): 30–70 mm
• Lip (small edge): 10–20 mm
• Forming stands: 20
• Line speed: 40 m/min (up to 50 m/min)
• Size change: Automatic, servo-adjusted
• Main motor: 45 kW
• Forming machine weight: 24 t
• Forming machine footprint: 16,500 × 2,000 mm (length × width)
• Drive: Gearbox and motor reducer with universal joints and chain-sprocket drive

Accuracy

• Cut length accuracy: ±0.7 mm over 6 m
• Straightness: ≤ ±1.2 mm per 3 m
• Twist: ≤ ±1.2 per 3 m
• Flange flare: ±2 mm
• Surface: No burrs at cut ends, no scratches

Output Example

• Profile: C100 × 50 × 20 × 2 mm (3.5 kg/m)
• Speed: 40 m/min
• Hourly output: 8.4 t
• 8-hour output: 67.2 t

Equipment Included

• Pinch-roll feeding mechanism
• Seven-roll levelling mechanism
• Left and right guiding mechanism
• Anti-scratch auxiliary wheels
• Gearbox and motor reducer
• Machine bed
• Universal joints
• Heavy-duty arch-type stands
• Main shafts, forming rolls and spacer sleeves
• Turk's head straightening mechanism
• Chain-sprocket drive
• Servo size-adjustment system

Applications

• C-section brackets for ground-mount and rooftop solar
• C purlins for PV mounting structures
• Manufacturers producing many C-profile sizes with frequent changeovers

Commercial Details

• Brand: Jinbolida
• Manufacturer: Shandong Jinbolida Precision Machinery Co., Ltd.
• Place of origin: Heze, Shandong, China

Frequently Asked Questions

• What C sizes can it make? Web widths from 50 to 160 mm, flange heights from 30 to 70 mm and lips from 10 to 20 mm.
• How are sizes changed? Servo motors adjust the web width and flange height automatically, with no manual roll changes needed within the range.
• How fast is it? 40 m/min, up to 50 m/min. For C100 × 50 × 20 × 2 mm, that's about 8.4 tonnes per hour.
• How accurate is it? Cut length ±0.7 mm over 6 m, straightness ≤ ±1.2 mm per 3 m, and flange flare ±2 mm.
• How big is the machine? The forming machine is 16.5 m long, 2 m wide and weighs 24 tonnes, with a 45 kW main motor.
• What should I send for a quotation? Your C-profile sizes, material grade and thickness range, punching and cutting needs, required output, and your local voltage and frequency.