Ground threaded Lead Screws
Ultra-fine ground threads · custom-designed · geometrically exceptional
When standard solutions reach their limits, our ground lead screw drives come into play. They combine ultra-fine thread pitches, maximum form accuracy, and freely configurable geometries into a solution precisely tailored to your application – from concept to motion.
Design advantages at Feinmess Suhl
- Ultra-fine threads from 0.2 mm pitch – for maximum resolution and repeatability
- Custom design – diameter, length, thread form, material, tribology, and function precisely matched to requirements
- All special geometries – enabled by optimized precision grinding processes
Product overview: ground threads Additional nut designs Contact us to discuss your specific requirements
Individual Configuration
Technical configuration options:
| Optionally expandable:
In short: We develop the optimal solution for your application together – starting from the design phase. |
The following lead screws are examples of possible designs.
Lead Screw (M6,35x1,588/78/98) - 76910375014
- Diameter: 6.35 mm
- Lead: 1.588 mm
- Thread length: 78 mm
- Overall length: 98 mm
- Spindle: stainless steel, ground – precision surface, corrosion-resistant and durable
- Nut: high-performance plastic – self-lubricating, low-wear, smooth-running
- Coupling sleeve: silicon brass – firmly and precisely shrink-fitted onto the spindle
- Axial play: 0.005–0.015 mm
- Option: customer-specific configuration available
Material and Design Features
- Ground lead screw M6.35×1.588 – highest surface quality for precise, low-backlash linear motion
- Spindle made of stainless steel – corrosion-resistant, hygienic and long-lasting
- Nut made of high-performance plastic – self-lubricating, wear-resistant, smooth-running
- Coupling sleeve made of silicon brass – shrink-fitted onto the spindle for backlash-free, torque-stable connection
- Axial play 0.005–0.015 mm – for highest positioning accuracy
- Custom versions (lengths, leads, materials) available on request
Applications
Used in precision metrology, optics and photonics, laboratory and medical technology, as well as high-precision actuators where tight tolerances, minimal axial play and consistently reliable linear motion in the smallest installation space are required.
Trapezoidal lead screw (Tr20x2/194/273 & Tr20x2/375/450) - 76910373220 & 76910373420
- Diameter: 20 mm
- Trapezoidal thread Tr20x2
- Single-start
- Lead: 2 mm
- Thread length: 194 mm / 375 mm
- Overall length: 273 mm / 450 mm
- Spindle: martensitic chrome steel – hardenable, wear-resistant, corrosion-resistant
- Nut: martensitic chrome-molybdenum steel – low wear with good sliding properties
- Coating: extremely hard, low-friction carbon-based coating for minimal wear and maximum surface hardness
- Option: customer-specific configuration available
Material and Design Characteristics
- Trapezoidal thread Tr20x2 – robust, self-locking thread form for high axial loads
- Spindle made of martensitic chrome steel – hardenable, wear-resistant, corrosion-resistant; with friction-optimized special coating
- Nut made of martensitic chrome-molybdenum steel – low wear with good sliding properties
- Special versions (lengths, leads, materials) available on request
Applications
Used in demanding linear drives in mechanical engineering, automation technology, and medical technology, where high axial forces, precise positioning, and durably reliable threaded connections are required under mechanically and tribologically demanding conditions.
Trapezoidal lead screw (Tr8x1,5/40/58,4) - 76910360714
- Diameter: 8 mm
- Thread Form: Trapezoidal
- Single Start
- Lead: 1.5 mm
- Thread Length: 40 mm
- Overall Length: 58.4 mm
- Spindle: Stainless, Austenitic Steel
- Nut: Copper-Tin Bronze
- Lubrication: Friction-optimized special grease for especially smooth-running, low-wear motion
- Option: Customer-specific configuration available
Material and Design Features
- Ground trapezoidal thread Tr8x1.5 – high precision with lead error <0.010/100 mm and wobble error <0.003 mm, centered on both sides
- Stainless steel spindle – corrosion-resistant, non-magnetic, hygienic
- Copper-tin bronze nut – self-lubricating due to excellent sliding and emergency-running properties, low wear
- Low-backlash assembly with <0.01 mm axial play – for precise, backlash-free linear motion
- Lubricated with special grease – friction-optimized for especially smooth-running, low-wear motion
- Special versions (lengths, leads, materials) available on request
Applications
Used in precision measurement technology, laboratory and medical technology, optics and sensor technology, as well as in compact actuators for automation and robotics, where precise, low-backlash linear motion is required in a small installation space.
We offer a wide range of customer-specific configurations – from geometry to material and lubrication, all the way to the finished assembly.
Mechanical Design
- Diameter 3–25 mm
- Lead from ≥ 0.2 mm, lead angle up to 90°
- Spindles as bar stock up to 3 m or from pre-machined blanks
- Single- or multi-start design
- Thread forms: Metric, UTS, Whitworth, Trapezoidal, special forms
Materials & Coatings
- Stainless steel (e.g., 1.4301, 1.4305, 1.4104); other materials available on request
- Nut materials: bronze or self-lubricating PEEK PVX
- Special lubrication & coating: functional tribology (e.g., Tribobond or Klübersynth series), tailored to application, environment, and service life
Environmental Adaptation
- Cryogenic and high-temperature versions
- Vacuum and cleanroom versions (ISO classes)
- Radiation-resistant variants (e.g., aerospace)
- Matched spindle-nut pairing
Accuracy & Preload
- Accuracy classes P1–P5
- Application-specific preload systems, backlash-free
Assembly Extension
- Combination with bearing or motor – up to a complete actuator or micrometer stage
- Documentation for invasive medical and aerospace applications; further documentation available on request
Lead Screw (S24x2,5/197/250) - 76910365314
- Diameter: 24 mm
- Buttress thread: S24×2.5
- Lead: 2.5 mm
- Overall length: 250 mm
- Axial backlash: 0.020 mm
- Screw: Martensitic stainless steel, hardened to 55 ± 2 HRC, wear-resistant and durable
- Nut: PEEK PVX black, self-lubricating, lubricant-free and low-contamination; relieved thread run-in/run-out with integrated 0.10 mm particle trap
- Option: Customizable to customer-specific requirements
Material and Design Features
- Buttress thread S24×2.5 – high axial load capacity combined with smooth, efficient operation
- Screw made of martensitic stainless steel – hardened to 55 ± 2 HRC, wear-resistant and durable
- Nut made of PEEK PVX black – self-lubricating, low-friction and low-particle design; relieved thread run-in/run-out with integrated 0.10 mm particle trap
- Axial backlash of 0.020 mm – for precise, repeatable linear motion
- Custom versions (lengths, leads, materials) available on request
Applications
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Designed for cleanroom technology, semiconductor manufacturing, medical technology and laboratory automation, where low-particle, lubricant-free and highly precise linear motion is required in clean operating environments.
We offer a wide range of custom configurations – from geometry, materials and lubrication to fully assembled systems.
Mechanical Design
- Diameters from 3–25 mm
- Leads from ≥ 0.2 mm, lead angles up to 90°
- Screws supplied as bar stock up to 3 m or manufactured from pre-machined blanks
- Single-start or multi-start thread designs
- Thread forms: Metric, UTS, Whitworth, trapezoidal, buttress and custom profiles
Materials & Coatings
- Martensitic stainless steel, hardened; additional materials available on request
- Nut materials: self-lubricating PEEK PVX, bronze or high-performance engineering polymers
- Special lubricants & coatings: application-specific tribological solutions optimized for operating conditions and service life
Environmental Adaptation
- Cryogenic and high-temperature versions
- Vacuum and cleanroom versions (ISO classes)
- Radiation-resistant variants (e.g. for space applications)
- Optimized screw and nut pairing for maximum performance
Accuracy & Preload
- Accuracy classes P1–P5
- Application-specific zero-backlash preload systems
Complete Assemblies
- Integrated with bearings or motors – up to complete actuators or precision positioning stages
- Documentation for medical technology and aerospace applications; additional documentation available on request
Lead Screw 76910316510
- Diameter: 10 mm
- Trapezoidal thread: Tr10x5P1mod
- Lead: 5 mm
- Thread length: 291 mm
- Overall length: 364 mm
- Spindle: 100Cr6 (bearing steel, hardened)
- With needle roller Dia. 1.5 – 1.6 long
- Order no.: 76 9103:165.10
- Option: customer-specific configuration available
Material and Design Features
- Trapezoidal thread Tr10x5P1mod – modified thread geometry for adapted load distribution
- Spindle made of bearing steel – through-hardened, wear-resistant, designed for high radial and axial loads
- With needle roller Dia. 1.5 – 1.6 mm length – for bearing or guidance within the drive train
- Overall length 364 mm – suitable for medium to larger strokes
- Special versions (lengths, leads, materials) available on request
Applications
-
Used in drive technology, mechanical engineering, and industrial actuators, where high load capacity, wear resistance, and precise linear motion under mechanical stress are required.
We offer a wide range of customer-specific configurations – from geometry to material and lubrication through to the finished assembly.
Mechanical Design
- Diameter 3–25 mm
- Lead from ≥ 0.2 mm, lead angle up to 90°
- Spindles available as bar stock up to 3 m or as pre-machined blanks
- Single- or multi-start design
- Thread forms: metric, UTS, Whitworth, trapezoidal, buttress, special forms
Materials & Coatings
- Martensitic chrome steel, hardened; other materials available on request
- Nut materials: self-lubricating PEEK PVX, bronze, or high-performance plastic
- Special lubrication & coating: functional tribology, tailored to application, environment, and service life
Environmental Adaptation
- Cryogenic and high-temperature versions
- Vacuum and cleanroom versions (ISO classes)
- Radiation-resistant variants (e.g. aerospace)
- Matched spindle-nut pairing
Accuracy & Preload
- Accuracy classes P1–P5
- Application-specific preload systems, backlash-free
Extension to Assembly
- Combination with bearings or motor – up to actuator or micrometer stage
- Documentation for invasive medicine and aerospace; further options on request
