Selection Method
Features of Various Screws
| Type | Slide Screws | Lead Screws | Rolled Ball Screws | Precision Ball Screws |
| Configuration |  |
 |
 |
 |
|---|---|---|---|---|
| Characteristics | For non-critical machine adjustments. Stainless steel screw, resin nut. Can be used without lubrication. For: stopper position adjustments, transfer pitch changes. | For applications with thrust loads and high loads. For: transfer pitch change jacks, lathe feed screws. | For applications not requiring precision ball screw accuracies, at reasonable costs. For: transfer lines. | For applications requiring high levels of velocity or positioning accuracies. For: measurement instruments. |
| Speed | Low | Medium | High | High |
| Accuracy | ★★ | ★★ | ★★★★ | ★★★★★ |
| Efficiency | △ Efficiency0.7 |
○ Efficiency0.8 |
◎ Efficiency0.95 |
◎ Efficiency0.95 |
| Allowable Axial Load ( ) are ref. values. |
△ （max540N） |
◎ （max30000N） |
○ （max9960N） |
○ （max9960N） |
| Price | ★★★★ | ★★★★★ | ★★★ | ★★ |
Lead Screw Selection Flow
Lead Screw Nut Selection Table
■Material: Select Brass Round Flange Type
| Photo | Type | Model | Purpose | Listed Page |
|---|---|---|---|---|
 |
Standard Type | MTS _ _ | Standard type. Flange shape selection is centered around The Round Flange type, based on available installation space. | P.717 |
 |
Compact Type | MTSP _ _ | Smaller nut diameter and length compared to the standard type. Space saving design. | |
 |
Pilot Type | MTSJR | Standard type with a pilot. The pilot is inserted in a bore for Z-axis application, etc. | |
 |
Tapped Hole Type | MTSER | The mounting holes are tapped instead of being through holes. Mounting screws are used from the back side. | |
 |
Slotted Hole Type | MTSQR | The mounting holes are slotted to allow position adjustments. | |
 |
RoHS Compliant Type | MTRFR MTXFR |
Same as the standard type but RoHS compliant for environmentally sensitive applications. | P.718 |
 |
Anti-Backlash Type | MTBLR | Clearance between the screw and nut is reduced for improved positioning repeatability. | |
 |
Lubrication Free Type | MTSM _ _ | Standard type with embedded solid lubricant. Requires less lubrication maintenance compared to the standard type. | P.719 |
 |
Resin Type | MTSR _ _ MTSF _ _ |
Same dimensional specification as the standard type but made with resin material. Requires less lubrication maintenance compared to the standard type. |
P.720 |
Lead Screw Application Examples
■App. Example 1 In-feed Adjuster
Unit consists of: Lead Screw Support Unit, Support Unit Ready Screw, Position Indicator.
Machine Purpose
In-feed of various material into transfer line, locating stopper, and guide.
Relatively small stroke range required, impacts in thrust direction. Lead screw is selected for low cost requirement.
Selection Details
- Lead Screw
- Keyed screw ready for support units is selected.
The screw is supported on both ends with support units.
- Support Units for Lead Screws
- Support Unit for Lead Screw is selected for the fixed side.
Preloaded dual radial bearings can withstand radial and axial loads.
- Support Units for Lead Screws
- Support Unit for Lead Screw is selected for the simple side. Integrated radial bearing makes for quick installation.
- Lead Screw Nut
- A standard round flanged lead screw nut is selected.
- Nut Bracket
- Dedicated nut bracket for lead screws is selected.
Application Details
| (1) Applied Load | 200N | Material Mass 300Ｎ |
| (2) Material Load | Once per day | For rod changes, etc. |
| (3) Positioning Accuracy | ±0.5mm | |
| (4) Stroke | 150mm |
Easy Assembly Design
By selecting from Easy Assembly Design components, a lead screw assembly unit can be configured easily.
