DLY High Lead Ball Screw is designed for fast feed and long-stroke linear motion. Compared with standard lead ball screws, a high lead design allows the nut to move a longer distance with each screw revolution, helping the machine achieve faster travel speed under suitable motor speed, load and support conditions.
Main supply scope:
DLY supplies high lead ball screw assemblies with matched nut, customized total length, shaft end machining, anti-rust protection and export packaging. Common options include SFE high lead series and drawing-based customized large lead ball screw assemblies.
High Lead Ball Screw Product Specifications
| Product Type | High Lead Ball Screw / High Speed Ball Screw / Large Lead Ball Screw |
| Common Series | SFE series and customized high lead ball screw assemblies |
| Common Diameter | 16mm, 20mm, 25mm, 32mm, 40mm, 50mm |
| Common Lead | 16mm, 20mm, 25mm, 32mm, 40mm, 50mm, 64mm and customized options |
| Accuracy Grade | C7 rolled type; C5 ground type available according to requirement |
| Screw Shaft Material | S55C carbon steel |
| Ball Nut Material | 20CrMo alloy steel |
| Surface Hardness | HRC 58–62 |
| End Machining | BK/BF, FK/FF, EK/EF support unit machining or drawing-based custom machining |
| Typical Application | Fast feed axis, long-stroke automation, packaging machinery, laser cutting equipment, transfer system, CNC auxiliary axis |
Why Use a High Lead Ball Screw?
The core advantage of a high lead ball screw is faster linear movement. The lead value means how far the ball nut moves when the screw shaft rotates one full turn. For example, a 20mm lead moves 20mm per revolution, while a 40mm lead moves 40mm per revolution.
For long-stroke machines, a larger lead can help the axis reach the required travel speed with lower screw RPM. This is why high lead ball screws are often selected for fast feed movement, transfer systems and automation equipment where travel efficiency is more important than micro-feed resolution.
Faster Travel per Revolution
Large lead design helps the nut move farther for each screw rotation, improving feed speed in suitable applications.
Suitable for Long Stroke
High lead screws are practical for equipment that needs repeated movement over longer travel distances.
Efficient Rolling Transmission
The rolling contact structure helps reduce friction and supports smoother linear motion compared with sliding screw transmission.
High Lead vs Standard Lead Ball Screw
| Item | High Lead Ball Screw | Standard Lead Ball Screw |
|---|---|---|
| Movement per Revolution | Longer travel per screw revolution | Shorter travel per screw revolution |
| Main Purpose | Fast feed, rapid transfer, long-stroke motion | Fine positioning, controlled feeding, general transmission |
| Typical Lead | Usually 10mm and above | Usually smaller lead options such as 4mm, 5mm and 10mm |
| Selection Focus | Speed, stroke, critical speed, support method, nut load rating | Accuracy, backlash, rigidity, feed resolution, load capacity |
| Typical Use | Automation transfer, packaging machinery, laser cutting, fast loading axis | CNC feed axis, measuring equipment, general machine transmission |
Quick Speed Reference
A simple way to understand high lead selection is to calculate the theoretical linear movement:
Linear travel per minute = Lead × Screw RPM
Example: If the lead is 40mm and the screw rotates at 500 rpm, the theoretical travel speed is 40 × 500 = 20,000mm/min. The actual usable speed still needs to consider screw length, support method, load, lubrication, alignment and machine rigidity.
SFE High Lead Ball Screw Dimension Table
Unit: mm. I = Lead. Da = Ball Diameter. N = Number of Circuit. Ca = Basic Dynamic Rating Load. Coa = Basic Static Rating Load. K = Stiffness.
| Type | d | I | Da | D | A | E | B | L | X | W | H | Q | N | Ca | Coa | K |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SFE1616-3 | 16 | 16 | 2.778 | 32 | 53 | 10.1 | 10 | 38 | 4.5 | 42 | 34 | M6 | 1.7×2 | 650 | 1280 | 19 |
| SFE1616-6 | 16 | 16 | 2.778 | 32 | 53 | 10.1 | 10 | 38 | 4.5 | 42 | 34 | M6 | 1.7×4 | 1180 | 2550 | 36 |
| SFE1632-3 | 16 | 32 | 3.175 | 34 | 55 | 10.5 | 10 | 34 | 5.5 | 45 | 36 | M6 | 0.7×2 | 410 | 680 | 21 |
| SFE1632-6 | 16 | 32 | 3.175 | 34 | 55 | 10.5 | 10 | 34 | 5.5 | 45 | 36 | M6 | 0.7×4 | 820 | 1360 | 41 |
| SFE2020-3 | 20 | 20 | 3.175 | 39 | 62 | 11.5 | 10 | 47 | 5.5 | 50 | 41 | M6 | 1.7×2 | 980 | 2140 | 25 |
| SFE2020-6 | 20 | 20 | 3.175 | 39 | 62 | 11.5 | 10 | 47 | 5.5 | 50 | 41 | M6 | 1.7×4 | 1780 | 4280 | 49 |
| SFE2040-3 | 20 | 40 | 3.175 | 38 | 58 | 11 | 10 | 41 | 5.5 | 48 | 40 | M6 | 0.7×2 | 455 | 880 | 25 |
| SFE2040-6 | 20 | 40 | 3.175 | 38 | 58 | 11 | 10 | 41 | 5.5 | 48 | 40 | M6 | 0.7×4 | 910 | 1760 | 49 |
| SFE2525-3 | 25 | 25 | 3.696 | 47 | 74 | 13 | 10 | 57 | 6.6 | 60 | 49 | M6 | 1.7×2 | 1470 | 3350 | 31 |
| SFE2525-6 | 25 | 25 | 3.696 | 47 | 74 | 13 | 12 | 57 | 6.6 | 60 | 49 | M6 | 1.7×4 | 2660 | 6690 | 60 |
| SFE2550-3 | 25 | 50 | 3.696 | 46 | 70 | 13 | 12 | 50 | 6.6 | 58 | 48 | M6 | 0.7×2 | 685 | 1380 | 31 |
| SFE2550-6 | 25 | 50 | 3.696 | 46 | 70 | 13 | 12 | 50 | 6.6 | 58 | 48 | M6 | 0.7×4 | 1370 | 2760 | 60 |
| SFE3232-3 | 32 | 32 | 4.762 | 58 | 92 | 16 | 12 | 71 | 9 | 74 | 60 | M6 | 1.7×2 | 2140 | 5260 | 40 |
| SFE3232-6 | 32 | 32 | 4.762 | 58 | 92 | 16 | 12 | 71 | 9 | 74 | 60 | M6 | 1.7×4 | 3890 | 10500 | 76 |
| SFE3264-3 | 32 | 64 | 4.762 | 58 | 92 | 15.5 | 12 | 62 | 9 | 74 | 60 | M6 | 0.7×2 | 1000 | 2130 | 40 |
| SFE3264-6 | 32 | 64 | 4.762 | 58 | 92 | 15.5 | 12 | 62 | 9 | 74 | 60 | M6 | 0.7×4 | 2000 | 4260 | 77 |
| SFE4040-3 | 40 | 40 | 6.350 | 73 | 114 | 19 | 15 | 89 | 11 | 93 | 75 | M6 | 1.7×2 | 3410 | 8820 | 49 |
| SFE4040-6 | 40 | 40 | 6.350 | 73 | 114 | 19 | 15 | 89 | 11 | 93 | 75 | M6 | 1.7×4 | 6200 | 17600 | 95 |
| SFE5050-3 | 50 | 50 | 7.938 | 90 | 135 | 21.5 | 20 | 107 | 14 | 112 | 92 | M6 | 1.7×2 | 5100 | 13800 | 60 |
| SFE5050-6 | 50 | 50 | 7.938 | 90 | 135 | 21.5 | 20 | 107 | 14 | 112 | 92 | M6 | 1.7×4 | 7260 | 27600 | 117 |
How to Read the High Lead Ball Screw Table
When selecting a high lead ball screw, do not only compare the model name. The same screw diameter may have different lead options, nut dimensions, load ratings and stiffness values. A larger lead improves travel distance per revolution, but the final model still needs to match the required load, stroke, installation space, motor speed and support method.
| Diameter d | Affects shaft strength, critical speed and general load capacity. |
| Lead I | Determines how far the nut moves per screw revolution. |
| Da | Ball diameter used in the nut circulation structure. |
| D / A / L / W / H | Nut body and flange dimensions, used to confirm whether the nut fits the machine structure. |
| Q | Mounting thread specification on the nut flange. |
| N | Ball circuit number reference, related to nut structure and load performance. |
| Ca / Coa | Basic dynamic and static load rating, used to compare load capacity between models. |
| K | Stiffness reference for applications that require stable positioning under load. |
Model Selection by Application Requirement
Compact Fast Feed Axis
Models such as SFE1616, SFE1632 and SFE2020 are suitable for compact equipment where installation space is limited but faster movement is required.
Long-Stroke Transfer Motion
Models such as SFE2040, SFE2550 and SFE3264 are often considered when the axis requires longer travel and faster positioning.
Higher Load Industrial Motion
Larger diameter models such as SFE4040 and SFE5050 can be selected for larger equipment, depending on load, screw length and support method.
End Machining and Assembly Confirmation
A high lead ball screw is usually not selected by screw model alone. The shaft end design must also match the bearing support, motor seat, coupling and installation direction. DLY can process shaft ends according to standard support units or customer drawings.
| Machining Item | What DLY Can Confirm |
|---|---|
| Support Unit Matching | BK/BF, FK/FF, EK/EF or drawing-based support end machining. |
| Total Length and Thread Length | Cutting and machining according to required travel and installation structure. |
| Motor Connection | Shaft end dimensions can be checked according to coupling bore and motor shaft size. |
| Nut Matching | Ball screw and nut are matched before shipment to support smoother movement. |
| Surface Protection | Anti-rust oil, protective wrapping, carton or wooden case packaging for export delivery. |
Typical Applications
High lead ball screws are mainly selected when the machine needs fast movement, repeated feeding and long travel. For applications where micro-feed resolution is more important than speed, a standard lead or precision ground ball screw may be more suitable.
Packaging Machinery
Used for fast pushing, feeding, labeling and repeated linear transfer motion.
Laser Cutting Equipment
Suitable for auxiliary positioning axes that need quick movement over a long stroke.
Automation Transfer Systems
Used in loading, unloading, sorting and material handling equipment.
CNC Fast Feed Axis
Applied where rapid positioning is required before cutting, clamping or processing.
Why Source High Lead Ball Screws from DLY?
DLY focuses on precision linear motion components including ball screws, ball nuts, linear guideways, linear shafts and support units. For high lead ball screw orders, our team can help confirm the lead, nut dimensions, support unit matching and shaft end machining before production.
| Model Confirmation | Confirm diameter, lead, nut size, load rating and stiffness according to application requirements. |
| Custom Machining | Support shaft end machining according to BK/BF, FK/FF, EK/EF or customer drawings. |
| Nut Matching | Ball screw and nut can be matched and checked before shipment. |
| Flexible Order Support | Support sample orders and batch production according to project demand. |
| Export Packaging | Anti-rust oil, protective wrapping and suitable packaging for international delivery. |
Need help selecting a high lead ball screw?
Send us your diameter, lead, total length, speed requirement, load condition and end machining drawing. DLY can help confirm the suitable model and provide quotation support.
WhatsApp: +86 166 0578 8856 | Email: dlyexport2@dlybearing.com
FAQ
Q1: Is a high lead ball screw the same as an SFE ball screw?
Not exactly. SFE is one common high lead ball screw series, but "high lead ball screw" describes the lead and motion requirement.
Q2: How do I choose between 20mm lead, 40mm lead and 50mm lead?
Choose according to required linear speed, motor speed, stroke length, load and positioning requirement. A larger lead gives longer travel per revolution, but the full system still needs to check load, support method and running stability.
Q3: Can DLY process the shaft ends?
Yes. DLY can process ball screw shaft ends according to BK/BF, FK/FF, EK/EF support units or customer drawings.
Q4: What is the difference between Ca, Coa and K?
Ca is the basic dynamic rating load, Coa is the basic static rating load, and K is the stiffness reference. These values help compare load and rigidity between different high lead ball screw models.
Q5: Can I order a customized high lead ball screw?
Yes. DLY can support customized length, lead confirmation, nut matching, shaft end machining and export packaging according to your drawing or machine requirement.
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