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Linear Optical Axis

Linear Optical Axis

YMT Bearings specializes in shafts, mast bearings, automotive bearings, linear guide bearings, tapered roller bearings, pillow block bearings, and deep groove ball bearings.
Customization is available, and OEM services are offered according to customer requirements.

SBR circular guide rails are a type of rolling guide rail. Rolling steel balls move back and forth between the slider and the guide rail. The load platform can easily perform high-precision linear motion along the guide rail. Compared to traditional machine tool guide rails, the friction coefficient of rolling guide rails can be reduced to 1/50 of the original value.
WhatsApp: +86 18863002440
E-mai: admin@yimeitebearing.com

Product Description

Linear shafts are a critical component widely used in mechanical systems, possessing many unique characteristics and advantages.


High Precision: Linear shafts are manufactured with exquisite craftsmanship and high dimensional accuracy, meeting the demands of highly precise working environments. Their machining accuracy typically reaches the micron level, ensuring reliable operation in high-precision equipment.

High Strength: Made from high-quality alloy steel or stainless steel, linear shafts possess high tensile strength and fatigue resistance, capable of withstanding significant working loads and impact loads, guaranteeing the stability and safety of mechanical systems.

High Surface Finish: The surface of linear shafts undergoes precise grinding and polishing, resulting in extremely high surface finish and flatness. This reduces friction with seals, minimizes seal wear, and extends service life.

Good Corrosion Resistance: Some linear shafts are made of stainless steel, offering excellent corrosion resistance and suitability for use in humid and corrosive environments, effectively extending their lifespan.

Advanced Manufacturing Process: The production of linear shafts utilizes advanced CNC machining technology and precision testing equipment, ensuring product quality and stability.

Aesthetically Pleasing Appearance: Linear shafts undergo surface treatments such as chrome plating and anodizing, resulting in an aesthetically pleasing appearance, ease of cleaning and maintenance, and improved overall product quality.

Diverse Applications: Linear shafts are widely used in various mechanical equipment, such as hydraulic cylinders, pneumatic cylinders, injection molding machines, and die-casting machines, meeting different working environments and requirements.

Strong Customizability:  Linear shafts can be customized according to specific customer needs, including dimensions, materials, and surface treatments, to meet the requirements of different customers.

Environmentally Friendly and Energy Efficient: During production and use, linear shafts can reduce resource consumption and energy waste through optimized design and material selection, meeting the requirements of modern society for environmental protection and energy conservation.


1. Surface TreatmentZinc plating (environmentally friendly zinc, typically 5-8μm, special: 12μm, Cr³⁺)

Nickel plating (higher cost, better corrosion resistance)

Dacro (Geomet) coating
2. Slot WidthProfile 20mm: Slot width 6 or 5mm

Profile 30mm: Slot width 8 or 6mm

Profile 40mm: Slot width 8 or 10mm

Profile 45mm: Slot width 10mm
3. Step SizeStep height for Slot 10mm: Typically 3.0mm

Step height for Slot 8mm: Typically 1.5mm
4. MaterialStandard: 20# steel

Options: Low carbon steel (Q195, Q235, C1020) or medium carbon steel (35#)

Stainless steel options available

Grade: 4/6/8/10/12
5. ThreadMetric threads (common): M3, M4, M5, M6, M8, M10

US threads: 10-32, 1/4-20, 5/16-18
6. Teeth2 teeth, 4 teeth, 7 teeth (fine teeth)

Other options: T-nut, slide-in nut, ball nut, spring-loaded nut, rhombus nut, flange nut
7. Raised DotsRaised dots on T-nut for electrical conductivity
8. Inspection1. Compatibility with profiles

2. Compliance with thread standards (pre-galvanized: 6G, post-galvanized: 6H)

3. For slot width 6 profiles, thread hole size should not exceed M6

4. For slot width 8 profiles, thread hole size should not exceed M8

5. For slot width 10 profiles, thread hole size should not exceed M10

6. Tolerances according to ISO2768-MK

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