Kocks / Friedrich Kocks industrial rolling mills and equipment

Industrial rolling mills and sizing blocks from Friedrich Kocks GmbH & Co KG (Kocks) deliver high precision for special bar quality steel, wire rod, and seamless tubular goods.

KOCKS 3-ROLL RSB reducing and sizing blocks

Reducing and sizing blocks 3-ROLL RSB by Friedrich Kocks deliver precision finishing for SBQ bar and wire rod from 5.0 to 160 mm. The 3-roll arrangement at 120-degree intervals prevents bar twisting and maintains uniform dimensional tolerance throughout high-speed rolling runs.

Uniform 3-roll reduction geometry preventing torsional deformation of round bars
Automated roll gap adjustment under rolling load for tight tolerance stability
Processing of special bar quality alloy grades, stainless steels, and superalloys
Rapid motorized stand exchange reducing downtime during mill program transitions

KOCKS 3-ROLL RB and intermediate iRSB blocks

Intermediate blocks Kocks 3-ROLL RB and iRSB replace conventional 2-high stands across roughing and intermediate mill sections. They provide high reduction for cross sections from 12 to 160 mm, curbing temperature losses and reducing main electrical drive power demand.

Replacement of multiple 2-high stands with reduced overall pass line footprint
Even stress distribution around the perimeter preventing internal core fissures
Extended roll groove service life achieved through balanced deformation passes
Refined grain microstructure resulting from deep symmetrical 3-sided reduction

KOCKS 3-ROLL PFB pre-finishing sizing blocks

Pre-finishing sizing blocks 3-ROLL PFB by Kocks calibrate round feed stock from 5 to 30 mm ahead of high-speed wire rod finishing blocks. Superior feed geometry stabilizes continuous rolling operations at elevated wire speeds while eliminating surface lap imperfections.

Accurate round entry profile delivered directly to wire rod finishing blocks
Prevention of longitudinal seams, guide marks, and microscopic roll surface laps
Steady inter-stand loop tension regulation between intermediate and sizing blocks
Compact monoblock housing providing swift maintenance access to roller guides

KOCKS SRB and TSB tube stretch reducing blocks

Tube mills incorporating Kocks SRB and TSB blocks perform stretch reduction and sizing on seamless and welded tubes from 10.2 to 406.4 mm. The 3-roll principle ensures uniform wall thickness distribution without internal hexagonal deformation across complete tube lengths.

Broad finished tube diameter range from 10.2 to 406.4 mm from single shell size
Minimized end-thickening losses through dynamic electronic tension adjustments
Superior outer surface finish with exact diameter tolerances on all products
Individual or group stand drive configuration with digital speed synchronization

KOCKS rolling rolls, carbide rings, and stands

Plant components for Kocks rolling lines comprise tungsten carbide roll rings, shafts, heavy bearings, and assembled 3-roll stands. The proprietary C-Cap roll tooling system provides rapid ring replacement on specialized workshop setup benches outside the rolling line.

Tungsten carbide composite roll rings delivering prolonged roll groove life
Complete 3-roll stand assemblies fitted with precision gears and heavy bearings
Proprietary C-Cap tooling system enabling rapid ring changing off the main mill
Roller entry and exit guide equipment with wear-resistant guide roll profiles

KOCKS SCS size control systems and laser profile gauges

Automated Kocks SCS systems perform dynamic roll gap control in real time to sustain tight geometric tolerances across entire shifts. High-speed 4D EAGLE laser profile gauges continuously capture full cross-sectional dimensions and surface profiles right at the mill delivery zone.

Automatic roll gap adjustment under full rolling load without mill interruptions
Non-contact laser profile measurement tracking true roundness at high line speeds
Seamless digital data integration with KOCKS STUDIO roll pass design software
Automated geometric data archiving per production batch for quality tracking

Kinematics and engineering principles of 3-ROLL RSB sizing blocks

Rolling lines engineered by Friedrich Kocks utilize 3-ROLL RSB technology based on synchronized radial reduction across three work rolls positioned at 120-degree intervals in a rigid single plane.

Unlike conventional 2-high mill stands with alternating oval-to-round pass designs, this symmetrical 3-sided configuration establishes a hydrostatic compression stress envelope that eliminates internal tensile stresses and torsional bar twisting.

Continuous automated roll gap regulation and high housing stiffness enable mills to roll demanding alloy steels and tool grades within a quarter of DIN EN diameter tolerances, delivering uniform cross sections and superior surface roundness across entire campaigns.

Mechanical design and rapid C-Cap roll stand exchange procedure

To minimize scheduled mill downtime, Friedrich Kocks introduced the modular C-Cap stand concept for modern 3-roll rolling blocks. Pre-assembled roll stands are mounted on precision locating blocks on the machine base and locked securely using fast-acting hydromechanical clamps.

Hydraulic piping for roll bearing lubrication, cooling water, and sensor lines connects through a centralized multi-coupling interface plate in a single motion.

Stand assembly, roll groove profile grinding, and entry roller guide alignment are executed off the active mill line on specialized workshop setup benches, ensuring rapid exchange during section adjustments without interrupting main production.

Flexible Free-Size Rolling technology for SBQ steel bars

Reducing and sizing blocks by Friedrich Kocks incorporate the Free-Size Rolling technique, enabling rolling mills to deliver finished bars of any custom diameter within the design envelope without roll changing stops.

The automated supervisory control system adjusts motorized roll gaps across all consecutive stands while regulating inter-stand workpiece tension at elevated line speeds.

Metallurgical facilities can fulfill customized small-batch orders for round and hexagonal profiles using a single intermediate billet size, reducing inventory overhead, eliminating trial rolling scrap, and delivering prompt order turnaround for precision bar users.

Heavy-duty SRB stretch reducing blocks for seamless steel tubes

Within seamless and welded steel tube rolling installations, Kocks SRB blocks perform intensive radial reduction combined with controlled longitudinal tube stretching.

The 3-roll circular pass geometry prevents internal hexagonal wall variations that occur in conventional 2-high tube mills, producing tubes with uniform wall thickness along their complete length.

Dynamic electronic speed control across individual stand drive motors suppresses wall thickening at tube front and rear ends, boosting total product yield.

Finished tubular products exhibit uniform mechanical properties, round geometry, and smooth surface quality for boiler and hydraulic applications.

Tungsten carbide roll rings, heavy bearings, and bevel drive gears

Continuous productivity across Friedrich Kocks rolling mills relies on roll rings manufactured from tungsten carbide composite alloys with cobalt or nickel binder matrices.

Roll rings are mounted on tapered high-strength tool steel shafts using hydraulic locking nuts, preventing rotational slippage under dynamic impact loading during bar bite.

Stand bearing housings accommodate precision tapered roller bearings equipped with pressurized oil-air lubrication and non-contact labyrinth seals for maximum reliability.

Heavy distribution gearboxes employ hardened bevel gears with ground spiral teeth to transfer high motor torque smoothly across all roll shafts.

Size Control System digital automation and 4D EAGLE laser gauging

Mill output dimensions are governed through an integrated Size Control System (SCS) coupled with high-speed multi-axis 4D EAGLE laser profile gauges.

The laser gauge continuously scans the full cross section of hot rolled bars leaving the final sizing stand, providing thousands of geometric measurements per second to model the profile in real time.

When minimal dimensional drift is detected, the SCS control loop transmits instant corrective setpoints to servo-driven roll adjustment units on the relevant stand, maintaining tight tolerance limits.

Digital integration with plant automation networks ensures complete batch tracking and quality logging.

Kocks / Friedrich Kocks and model names are trademarks of their respective owners and are used only to identify the equipment for which we source parts. SpareX is not an official dealer, distributor or representative of Kocks / Friedrich Kocks and is not affiliated with the trademark owner. Origin, documents and warranty are stated for each item in the quotation.