Sahinler 4R HS 20-190
The Sahinler 4R HS 20-190 is a heavy-duty 4‑roll hydraulic plate rolling machine used in general metal fabrication and industrial component manufacturing, suited for precision rolling of medium-to-thick plate in production environments.
At a Glance
- Machine type: 4‑roll hydraulic plate rolling machine (4R series)
- Typical use: General metal fabrication, industrial components, cylindrical and conical shell rolling
- Automation level: Hydraulic with powered roll adjustment; often supports semi‑automatic rolling cycles
- Production role: Suited for repetitive production of rolled parts where consistency and setup repeatability are important
- Material range: Designed for steel plate; exact thickness/width capacity depends on the specific 20‑190 configuration
- Shop fit: Common in fabrication shops, job shops, and manufacturing plants handling structural and process-industry work
What It Typically Costs
Pricing estimate (USD): $150,000 – $400,000 USD, depending on age, condition, configuration, and included options.
- Lower end of the range usually reflects older or heavily used machines with basic controls and minimal accessories.
- Mid-range pricing often corresponds to well-maintained used machines with standard CNC/NC control and standard roll tooling.
- Upper range is more typical of late-model or lightly used units, possibly with advanced controls, extended capacity, or special accessories.
- Installation, freight, and commissioning can be significant add-ons; many buyers budget separately for rigging and training.
- Tooling, support saddles, and any special cone-rolling or support devices may add noticeable cost if not included.
Specs That Matter
- Plate capacity (thickness & width) – Confirm the maximum mild steel thickness and maximum working width the 20‑190 configuration is rated for, and compare with your heaviest and widest jobs.
- Pre-bending capability – 4‑roll machines are valued for tight leading/trailing edge pre-bend; check the minimum straight edge they can achieve at your typical plate thickness.
- Top roll diameter and roll geometry – Larger top rolls are better for thicker plate and reduce plate marking; roll spacing influences minimum diameter you can roll.
- Minimum and maximum shell diameter – Verify the smallest and largest diameters achievable without overstressing the machine or exceeding its geometry limits.
- Hydraulic system power and speed – Approach speed, rolling speed, and hydraulic power affect cycle time and productivity, especially in production environments.
- Control type (NC/CNC/manual assist) – The sophistication of the control impacts repeatability, operator skill requirements, and program storage for recurring jobs.
- Side and overhead supports – For wide or thick plates, powered side/overhead supports reduce deflection and operator strain, improving part accuracy.
What to Inspect Before You Buy
- Verify plate capacity on the nameplate and documentation against your required material thickness, width, and grade.
- Inspect all rolls for wear, scoring, flat spots, or taper that could affect part accuracy or leave marks on finished parts.
- Check hydraulic system condition: look for leaks, listen for pump noise, and observe smooth, synchronized movement of all rolls.
- Test the control system (NC/CNC or pendant): ensure all functions, indicators, and safety interlocks operate correctly and consistently.
- Run the machine through a full rolling cycle with plate, if possible, to assess pre-bend quality, roundness, and repeatability.
- Check frame and weldments for cracks, distortion, or signs of overloading, particularly near roll bearings and supports.
- Inspect bearings, gearboxes, and drive components for abnormal noise, backlash, overheating, or oil contamination.
- Confirm availability and condition of accessories such as cone-rolling devices, side supports, and any special tooling or fixtures.
- Review maintenance records, hours (if logged), and any major repairs or component replacements performed on the machine.
- Verify that electricals (voltage, controls, safety circuits) match your plant standards and that manuals and schematics are included.
Buyer Questions
What type of work is the Sahinler 4R HS 20-190 best suited for? It is typically used for rolling steel plate into cylindrical or conical shapes in general fabrication and industrial component manufacturing, where consistent, repeatable production is required.
How does a 4‑roll machine benefit my shop compared with a 3‑roll? 4‑roll machines generally offer better control of the plate during pre-bending and rolling, improved repeatability, and faster setup, which is helpful in production environments.
What are the most critical specs to match to my jobs? Focus on maximum plate thickness and width, minimum and maximum rollable diameters, pre-bending capability, and the level of automation or CNC control you need.
Why is there such a wide price range for this model? Price varies with age, overall condition, configuration, control sophistication, included accessories, and whether the machine is fully serviced or sold as-is.
Can this machine handle materials other than mild steel? It is designed around steel plate capacity; other materials may be rolled, but you must derate the thickness according to material strength and follow the manufacturer’s guidelines.
What should I look for to avoid buying an overworked machine? Signs include roll surface damage, frame distortion, noisy hydraulics or gearboxes, inconsistent movement, and a history of frequent major repairs or overloaded use.
How important is the control system condition on a used unit? Very important, as a malfunctioning or obsolete control can reduce productivity and increase downtime; repairs or retrofits can be costly compared with a fully functional system.
Do I need side or overhead supports for this machine? If you regularly roll wide or thick plates, supports help manage plate deflection and operator workload, improving accuracy and safety.
What installation considerations should I plan for? Plan for adequate floor space, foundation strength, electrical supply compatibility, safe material handling paths, and access for rigging the machine into place.
Is operator training necessary for this type of plate roll? Yes, proper training is important for safe operation, correct use of the hydraulic and control systems, and achieving consistent, accurate rolled parts.
Source: Sahinler 4R HS 20-190
Sahinler 4R HS 20-190
