KSK Precise Motion Ball Screws and Linear Motion Drives

Turn-key export supply of KSK Precise Motion ground precision ball screws, 4,000 kN heavy-duty screws, miniature ball screws, telescopic actuators and ČSN 014050 trapezoidal lead screws for CNC machine tools and heavy machinery.

Precision Ground Ball Screws KSK Precise Screw

KSK Precise Screw positioning ball screws in thread diameters from 12 to 180 mm and lengths up to 15.5 m are manufactured to ISO 3408 accuracy classes P1, P3 and P5 with customized nut preloading and 94–97% mechanical efficiency for CNC machine tools.

Thread diameters 12–180 mm, shaft length up to 15.5 m, ISO 3408 accuracy grades P1, P3 and P5
Minimum shaft tensile strength Rm = 800 MPa, mechanical efficiency 94–97%, operating range −40 to +80 °C
Flanged and cylindrical ball nut configurations A, AP, AP-A, APR, APV and APHL with preload
Applications: precision grinding machines, milling and boring centers, CNC lathes and machining centers

High-Load Ball Screws KSK Heavy Duty Screw

KSK Heavy Duty Screw assemblies are engineered for extreme axial dynamic loads up to 4,000,000 N (4,000 kN) across recommended thread diameters from 40 to 200 mm, utilizing high-strength alloy shafts with Rm ≥ 900 MPa and 93–95% efficiency.

Recommended thread diameter range 40–200 mm, dynamic axial load capacity up to 4,000,000 N
Minimum shaft material tensile strength Rm = 900 MPa, mechanical efficiency 93–95%
Reinforced ball track geometry and multi-circuit load-bearing ball recirculation systems
Applications: injection molding machines, electric presses, heavy lifting systems and hydraulic cylinder replacements

Miniature Precision Ball Screws KSK Micro Screw

Produced by KSK's dedicated Miniature Ball Screw Division, Micro Screw units feature diameters from 5 to 12 mm and lengths up to 600 mm in ultra-high accuracy classes P0, P1 and P3 with superior running smoothness.

Thread diameters 5 to 12 mm, shaft lengths up to 600 mm, accuracy classes P0, P1 and P3
Minimum shaft tensile strength Rm = 800 MPa, mechanical efficiency 94–97%, temperature −40 to +80 °C
Ultra-compact ball nuts with precision internal return systems and custom stainless steel options
Applications: electron microscopes, semiconductor fabrication equipment, metrology instruments and aerospace actuators

Transport Ball Screws KSK Basic Screw

KSK Basic Screw transport ball screws conform to ISO 3408 standards in diameters up to 63 mm and lengths up to 5.6 m with accuracy grades T5 and T7, offering reliable linear drive performance for general industrial automation.

Thread diameters up to 63 mm, shaft length up to 5.6 m, ISO 3408 transport grades T5 and T7
Minimum shaft tensile strength Rm = 650 MPa, operating temperature range −20 to +60 °C
Standardized nut mounting dimensions, dependable load capacity and low maintenance requirements
Applications: material handling mechanisms, woodworking machinery, packaging lines and factory automation

Telescopic Ball Screws, Linear Actuators and Special Screw Designs

KSK Special Screw solutions encompass multi-stage telescopic ball screws for long strokes within compact retracted lengths, profile-free ball screws and electromechanical linear actuators achieving ≥ 95% conversion efficiency.

Telescopic ball screws: cascaded multi-stage screw sets for hexapods, simulators and lifting platforms
Electromechanical linear actuators: motor-driven hydraulic cylinder replacements with ≥ 95% efficiency
Ball screws without profile: simplified rotary-to-linear drives for manipulators and conveyors
Custom engineering of shaft journals, non-standard leads and integrated bearing housings

Trapezoidal Lead Screws and Nuts KSK (ČSN 014050)

KSK manufactures comprehensive trapezoidal screw and nut assemblies in diameters from 16 to 120 mm, leads from 3 to 50 mm and maximum threaded lengths up to 12,000 mm across three accuracy grades pursuant to ČSN 014050.

Diameters 16 to 120 mm, thread pitches 3 to 50 mm (core range 4–14 mm), standard length up to 6,200 mm
Maximum thread length up to 12,000 mm depending on shaft diameter and accuracy specification
Three ČSN 014050 accuracy classes: fine-ground thread profile, medium precision and rough grade
Applications: coordinate boring machines, grinders, conventional lathes, milling and drilling machines

Induction-Hardened Precision Guide Rods KSK

KSK precision cylindrical guide rods are machined from CF53 and 42CrMo4 alloy steels, induction hardened to 58–60 HRC, and supplied with matched roller guides to form complete linear motion units alongside KSK ball screws.

Manufactured from high-grade CF53 and 42CrMo4 steels with precision ground outer surfaces
Surface induction hardening to 58–60 HRC for high wear resistance under roller contact
Supplied with matched roller guide carriages dimensioned to customer operating loads
Forms rigid basic linear motion assemblies in combination with KSK ball screws and servo drives

Ball Screw Overhaul, Reverse Engineering & 6 kW Robotic Laser Hardening

KSK's Services Division provides factory overhauls of ball and trapezoidal screws, manufacturing of replacement screws from physical samples, and automated laser hardening, cladding and welding on a 6 kW Motoman robotic cell.

Manufacture of new replacement ball and trapezoidal screws modeled from worn sample units
Factory regrinding of ball tracks, ball replacement and preload recalibration across world brands
6-axis Motoman robotic laser workplace: 6 kW beam output, 1,030 nm wavelength, 600 μm spot diameter
Single-axis positioner handling workpieces up to 1,000 kg, 6,000 mm length and 800 mm turning diameter

Ball Screw Identification and Specification via KSK Drawings and Nut Codes

KSK Precise Motion, a.s. (formerly Kuličkové šrouby Kuřim, founded in 1967 within the TOS Kuřim machine tool works in Kuřim, Czech Republic, and part of Arkero Group) manufactures precision ball screws to ISO 3408 and custom OEM drawings.

To specify a replacement screw-and-nut assembly accurately, provide the nominal thread diameter (5 to 200 mm), lead/pitch, overall and threaded shaft lengths, thread hand, accuracy class (P0, P1, P3, P5 or T5, T7) and nut design code (A, AP, AP-A, APR, APV, APHL).

If the factory markings on the nut flange or shaft journal are worn off, attach an assembly drawing, machine tool model (TOS Kuřim, Škoda, Kovosvit MAS, Fermat, ZPS, etc.) or dimensional sketch of the bearing journals.

Precise Screw Series: Ground Positioning Ball Screws up to 15.5 m for CNC Machine Tools

The KSK Precise Screw line spans thread diameters from 12 to 180 mm and single-piece lengths up to 15.5 m, delivering tight lead accuracy in ISO 3408 classes P1, P3 and P5 across operating temperatures from −40 to +80 °C.

Shafts are machined from alloy steels with minimum tensile strength Rm = 800 MPa, induction hardened and thread-ground in climate-controlled facilities to achieve 94–97% mechanical efficiency.

We supply complete preloaded screw-and-nut sets engineered for zero-backlash positioning on X, Y and Z axes of CNC milling and boring centers, precision surface grinders and heavy-duty lathes.

Heavy Duty Screw Series: High-Load Drives up to 4,000 kN Replacing Hydraulic Cylinders

KSK Heavy Duty Screw assemblies in recommended diameters from 40 to 200 mm withstand severe continuous and shock axial loads with dynamic load ratings reaching up to 4,000,000 N (4,000 kN) and 93–95% efficiency.

High-tensile shaft alloys (Rm ≥ 900 MPa) and multi-circuit large-ball recirculation allow machine builders to replace hydraulic cylinders with clean, energy-efficient electromechanical servo drives.

We deliver heavy-duty ball screw sets for all-electric injection molding machines, servo stamping presses, heavy industrial lifts and metallurgical handling systems.

Miniature Micro Screw Division (P0–P3) and ISO 3408 Basic Screw Transport Drives

Established as a specialized division in 2024, the Miniature Ball Screw Division produces Micro Screw drives in diameters from 5 to 12 mm and lengths up to 600 mm in accuracy grades P0, P1 and P3 for electron microscopes, semiconductor tools and medical devices.

For general factory automation, woodworking equipment and conveyors, the Basic Screw series provides ISO 3408 transport grades T5 and T7 in diameters up to 63 mm and lengths up to 5.6 m (Rm ≥ 650 MPa, −20 to +60 °C).

Orders are supplied with single or double nuts, wiper seals and finish-ground shaft ends ready for angular contact support bearings.

Ball Nut Configurations A, AP, AP-A, APR, APV and APHL and Preload Calibration

The KSK online catalogue covers cylindrical and flanged ball nut designs including series A (standard non-preloaded), AP and AP-A (single and double nuts with calibrated axial preload), as well as specialized APR, APV and APHL series.

Axial preload is set either via oversized four-point-contact ball selection or precision ground spacer rings between tandem nut bodies to maximize axial stiffness under cutting forces.

When ordering replacement nuts or complete assemblies, confirm lubrication port orientation, wiper seal type (felt, elastomer or labyrinth) and flange mounting hole geometry.

ČSN 014050 Trapezoidal Lead Screws and CF53 / 42CrMo4 Induction-Hardened Guide Rods

Alongside ball screws, KSK manufactures trapezoidal lead screws pursuant to ČSN 014050 in diameters from 16 to 120 mm, pitches from 3 to 50 mm (standard lengths up to 6,200 mm, maximum thread length up to 12,000 mm) paired with custom bronze or cast-iron nuts.

Three accuracy grades are available: fine-ground thread profiles for coordinate boring and grinding machines, medium grade for universal lathes and milling machines, and rough grade for auxiliary adjustments.

For complete linear motion units, KSK supplies precision guide rods made of CF53 and 42CrMo4 steels, induction hardened to 58–60 HRC and matched with roller guide carriages.

Telescopic Ball Screws, Linear Actuators and Sample-Based Reverse Engineering

Where compact retracted dimensions must combine with long extension strokes, KSK builds cascaded telescopic ball screws whose intermediate nuts simultaneously act as bearing supports for the extending shafts.

Electromechanical linear actuators with ≥ 95% conversion efficiency provide drop-in replacement for hydraulic cylinders on motion simulators, hexapods and lifting platforms.

KSK Services Division also performs factory overhauls, manufactures new replacement screws from physical worn samples, and operates a 6 kW Motoman 6-axis robotic laser workplace (1,030 nm, 1,000 kg / 6,000 mm positioner) for surface hardening and cladding.

Global B2B Procurement and Export Logistics for KSK Precise Motion Components

Equipguo coordinates international B2B supply of genuine KSK Precise Motion ball screws, trapezoidal screws, guide rods and custom rotary components for machine tool builders and industrial maintenance teams worldwide.

Our engineers verify shaft journal tolerances, accuracy classes and preload requirements prior to production, ensuring seamless mechanical drop-in replacement on European and Asian machinery.

Long-shaft shipments up to 15.5 m are packed in reinforced timber export crates with anti-corrosion protection to prevent bending or transit damage during international freight.

All ball screws and trapezoidal lead screws are manufactured or selected against verified shaft drawings, ISO 3408 / ČSN 014050 accuracy classes, nut configuration codes and preload specs. Machine-side lubrication and clearance adjustment remain customer-defined.