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- Miniature Ball Screws Diameter 3 – 16 mm
Miniature Ball Screws Diameter 3 – 16 mm
Miniature Ball Screws Diameter 3 – 16 mm
1. Overview
This document provides comprehensive technical specifications and data for miniature and transport ball screws and nuts with nominal diameters ranging from 3 mm to 16 mm (and up to 22 mm in some sections). It covers shaft styles, nut types, dimensional data, load capacities, friction characteristics, and assembly guidelines essential for precision mechanical applications in fields such as semiconductor technology, optics, medical devices, and measurement technology.
2. Product Range and Customization
Ball screws are available in two primary shaft styles (A and B) and multiple nut designs, including flange nuts with wipers, cylindrical nuts without wipers, nuts with connecting threads, and spring preloaded double nuts housed with connecting threads. Sizes range from 3 mm to 16 mm nominal diameter, with options for ground execution (accuracy class P0) and rolled screws (accuracy classes T7 to T10). Customizations include non-standard nut shapes, pitches, diameters, materials, and coatings. Customers are encouraged to provide drawings for tailored quotations.
3. Technical Specifications and Features
- Shaft Styles: Styles A and B with specific dimensional and functional characteristics affecting compatibility and assembly.
- Nut Types: Series 1112, 1214, 1412, 1510, 1234, 1132, 1530, 2432, and others, each with defined nut lengths, diameters, and features such as wipers, connecting threads, lubrication holes, and keyways.
- Nominal Diameters: 3 mm to 16 mm (some data up to 22 mm and 30 mm).
- Leads: Range from 0.5 mm to 30 mm depending on shaft style and application, with common values including 0.5, 1, 1.5, 2, 2.5, 3, 4, 5, and higher.
- Stroke Lengths: Vary from 20 mm to 600 mm depending on model and application.
- Ball Circuits: Typically 2 to 5 circuits, influencing load distribution and smoothness.
- Ball Diameters: Range from 0.6 mm to 3.5 mm depending on screw size and load requirements.
- Accuracy Classes: Ground screws up to P0; rolled screws from T7 to T10; accuracy class must be specified when ordering.
4. Load Capacities and Mechanical Performance
- Dynamic Load Capacity (Ca): From approximately 90 N (smallest nuts) up to 47,800 N for larger configurations.
- Static Load Capacity (C0a): Ranges from 90 N to 47,800 N, generally higher than dynamic capacity.
- Maximum Preload: Varies from 10 N to 150 N depending on nut type and size.
- Maximum Axial Load: From 6 N to over 130 N, depending on screw size and preload.
- Axial Play with Backlash: Typically minimal, between 0.01 mm and 0.03 mm, critical for precision positioning.
- Friction Torque: For preloaded nuts, ranges from approximately 0.3 Ncm to 3.0 Ncm, with higher values under preload conditions.
5. Dimensional and Thread Details
- Thread sizes include metric designations such as M6x0.75, M8x1, M10x1, M12x1, M14x1, M18x1, and M22x1.
- Diameter tolerances follow classes like h6, g5, g6, and h8 to ensure precision fits.
- Nut lengths vary widely, typically from 7 mm to 57 mm depending on series and preload.
- Nut diameters range from 7 mm to 33 mm, standardized per series.
- Wrench flat sizes and pin wrench diameters are specified for assembly and maintenance, ranging from 8 mm to 30 mm.
- Additional features include lubrication holes (e.g., M6), keyways, and bearing journals for enhanced functionality.
6. Shaft Styles and Assembly Recommendations
Two shaft styles (A and B) influence lead, nominal diameter, nut compatibility, and assembly procedures. Users are advised to follow detailed installation guidelines referenced in the document (e.g., pages 24/25) to ensure proper fit and performance.
7. Nut Types and Characteristics
- Flange Nuts (e.g., Series 1412, 2432): Feature standard wipers on both ends for contamination protection.
- Cylindrical Nuts (e.g., Series 1214, 1234): Without wipers, suitable for compact designs.
- Nuts with Connecting Threads (e.g., Series 1112, 1132): Facilitate assembly and preload adjustment.
- Spring Preloaded Double Nuts (e.g., Series 1510, 1530): Provide reduced axial play and improved rigidity, essential for high-precision applications.
8. Numbering System and Accuracy Classes
The document references a numbering system (page 52) for product identification and emphasizes specifying the accuracy class when ordering. Accuracy classes directly affect preload, friction torque, axial play, and overall performance.
9. Applications and Recommendations
Miniature and transport ball screws are recommended for high-precision positioning tasks in sensitive environments such as semiconductor manufacturing, optics, medical instruments, and measurement equipment. Selection should consider load requirements, accuracy class, preload, friction torque, and environmental conditions. Preloaded nuts are advised to minimize backlash and friction. Proper lubrication and adherence to dimensional standards are critical for longevity and reliability.
10. Summary of Critical Parameters
| Parameter | Range / Typical Values | Notes |
|---|---|---|
| Nominal Diameter | 3 mm to 16 mm (up to 22 mm in some data) | Standard sizes for miniature and transport ball screws |
| Lead (P) | 0.5 mm to 30 mm | Varies by shaft style and application |
| Stroke Length | 20 mm to 600 mm | Depends on model and use case |
| Dynamic Load Capacity (Ca) | 90 N to 47,800 N | Higher values for larger screws and leads |
| Static Load Capacity (C0a) | 90 N to 47,800 N | Generally exceeds dynamic capacity |
| Maximum Preload | 10 N to 150 N | Depends on nut type and size |
| Maximum Axial Load | 6 N to 130 N | Varies with screw size and preload |
| Axial Play with Backlash | 0.01 mm to 0.03 mm | Critical for precision positioning |
| Friction Torque (Preloaded Nut) | 0.3 Ncm to 3.0 Ncm | Lower values preferred for smooth operation |
| Nut Length | 7 mm to 57 mm | Varies by series and preload |
| Nut Diameter | 7 mm to 33 mm | Standardized per series |
11. Conclusion
Steinmeyer’s miniature and transport ball screws and nuts provide versatile, precise, and reliable solutions for linear motion applications requiring high accuracy and load capacity. The availability of multiple shaft styles, nut types, and customization options, combined with detailed technical data and adherence to accuracy classes, enables tailored solutions for diverse industrial needs. Proper selection, assembly, preload adjustment, and maintenance are essential to optimize performance and longevity.
Catalog excerpts
Miniature Ball Screws Diameter 3 – 16 mm
Open the catalog to page 1
M i n i at u r e B a l l S c r e w s 3 – 1 6 mm Miniature ball screws are mainly used in Semiconductor Technology, Optics, Medical Technology and Measurement Technology markets. There are two different standard shaft styles available, style A and B, which are available in various stroke lengths. On inquiry we offer suitable support bearings as well. In addition to the standard ball screws, Steinmeyer also offers screws and nuts in completely custom execution. All sizes are available in ground execution up to accuracy class P0. And from diameter 8 mm to 16 mm we also offer miniature rolled screws...
Open the catalog to page 2
Positioning ball screws 3 - 16 mm Ground execution with standard bearing journal P0 - P5 Series 1412, 1214, 1112 30° Fl ange nut n Series 1412: Nut with flange and standard wipers on both ends Cylindrical nut n Series 1214: Cylindrical nut without wipers Nut with connecting thread n Series 1112: Nut with connecting thread without wipers Numbering system see page 52 (Please specify the accuracy class) Dynamic load capacity Ca [N] Static load capacity C0a [N] Shaft style Lead P [mm] Max. axial play [mm] with backlash Max. friction torque [Ncm] (preloaded nut)
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Overall length Thread length Overall length Thread length Overall length Overall length Thread length (4) Overall length wrench flat 8 Thread length wrench flat 8 Overall length (4) wrench flat Overall length 8 Thread length Overall length Nuts shown in standard orientation. Select one nut from table.
Open the catalog to page 4
Positioning ball screws 3 - 16 mm Ground execution with standard bearing journal P0 - P5 Series 1510 Nut with connecting thread n Series 1510: Spring preloaded double nut in housing with connecting thread without wipers Numbering system see page 52 (Please specify the accuracy class) Dynamic load capacity Ca [N] Static load capacity C0a [N] Shaft style Lead P [mm]
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Thread length Overall length Overall length Thread length wrench flat 8 (4) Overall length wrench flat 8 Thread length Thread length Overall length Please follow the advice on pag
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Positioning ball screws 3 - 16 mm Nut with connecting thread n Series 1412: Nut with flange and standard wipers on both ends Fl ange nut n Series 2412: Nut with flange and standard wipers on both ends CYLINDICAL n u t n Series 1214: Cylindrical nut without wipers Numbering system see page 52 (Please specify the accuracy class) Dynamic load capacity Ca [N] Static load capacity C0a [N] Max. axial play [mm] with backlash Shaft style Lead P [mm]
Open the catalog to page 7
Thread length Overall length Overall length wrench flat 8 Thread length Overall length Overall length Overal wrench flat 8 (4) Overall length wrench flat 8 Thread length Overall length Thread length Overall length Overall length Nuts shown in standard orientation. Select one nut from table.
Open the catalog to page 8
Positioning ball screws 3 - 16 mm Ground execution with standard bearing journal P0 - P5 Series 1112, 1510 for pin wrench Ø2 Nut with connecting thread DA Series 1112: Nut with connecting thread without wipers 10 n n Series 1510: 6,5 10 Spring preloaded double nut in housing with connecting thread without wipers Shaft style Numbering system see page 52 (Please specify the accuracy class) Dynamic load capacity Ca [N] Static load capacity C0a [N] Max. axial play [mm] with backlash
Open the catalog to page 9
Thread length Overall length Overall length wrench flat 8 Overall length Thread length Overall length Thread length Overall length Nuts shown in standard orientation. Select one nut from table. Please follow the advice on page 24/25.
Open the catalog to page 10
Positioning ball screws 3 - 16 mm Ground execution with standard bearing journal P0 - P5 Series 1412 30° 30° ,4 Ø3 Fl ange nut n Series 1412: Nut with flange and standard wipers on both ends Numbering system see page 52 (Please specify the accuracy class) Technical data Shaft style Dynamic load capacity Ca [N] Static load capacity C0a [N] Max. axial play [mm] with backlash Lead P [mm] Nominal diameter dN [mm] Nominal stroke [mm] Ball circles i Max. friction torque [Ncm] (preloaded nut)
Open the catalog to page 11
Thread length Overall length Thread length Thread length Overall length Thread length Thread length Overall length Thread length Overall length Overall length Overall length Thread length Overall length Overall length
Open the catalog to page 12
Positioning ball screws 3 - 16 mm Ground execution with standard bearing journal P0 - P5 Series 2412 30° 30° ,4 Ø3 Fl ange nut n Series 2412: Nut with flange and standard wipers on both ends Numbering system see page 52 (Please specify the accuracy class) Shaft style Dynamic load capacity Ca [N] Static load capacity C0a [N] Max. axial play [mm] with backlash Nominal stroke [mm] Ball circles i Ball diameter [mm] Max. friction torque [Ncm] (preloaded nut)
Open the catalog to page 13
Thread length Overall length Thread length Thread length Thread length Overall length Thread length Overall length Overall length Overall length Thread length Overall length Thread length
Open the catalog to page 14
Positioning ball screws 3 - 16 mm Ground execution with standard bearing journal P0 - P5 Series 1214 n Series 1214: Cylindrical nut without wipers Numbering system see page 52 (Please specify the accuracy class) Technical data Shaft style Dynamic load capacity Ca [N] Static load capacity C0a [N] Max. axial play [mm] with backlash Lead P [mm] Nominal diameter dN [mm] Nominal stroke [mm] Ball circles i Max. friction torque [Ncm] (preloaded nut)
Open the catalog to page 15
Thread length Overall length Thread length Thread length Overall length Overall length Thread length
Open the catalog to page 16
Positioning ball screws 3 - 16 mm Ground execution with standard bearing journal P0 - P5 Series 1112 Nut with connecting thread M22x1 DA n Series 1112: 10 Nut with connecting thread without wipers Numbering system 5 page 52 see (Please specify the accuracy class) Technical data D1 Dynamic load capacity Ca [N] Static load capacity C0a [N] Shaft style Lead P [mm] Nominal diameter dN [mm] Nominal stroke [mm] Ball circles i Max. friction torque [Ncm] (preloaded nut)
Open the catalog to page 17
Thread length Overall length Thread length Thread length Overall length Thread length Overall length Overall length Nuts shown in standard orientation. Select one nut from table.
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