Description
Linear Bush LM 40
ISeal type=Contact seal on both sides
Standard Model is a device used for linear motion, featuring the following key characteristics:
📐 Key Specifications
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Inner Diameter (d): 40 mm
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Outer Diameter (D): 60 mm
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Length (L): 80 mm (approx. width ~60.5 mm depending on design)
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Load Rating:
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Dynamic (C): ≈ 2,160 N
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Static (C₀): ≈ 4,020 N
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Ball Circuit Structure: 6 rows with polymer retainer
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Seals: Double rubber seals (UU) for dust and moisture protection
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Weight: Approximately 0.585 kg
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Material: Bearing housing made from chrome steel (GCr15/SUJ2); retainer made from polymer
🏭 Typical Applications
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CNC systems, 3D printers, DIY robotics, and automation equipment
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Suitable for slide tables, measuring instruments, and linear motion systems requiring low friction and high accuracy
🔧 Features of the THK LM Series
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Designed for high-precision linear motion
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Polymer retainer reduces noise and friction
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Double-sealed ends (UU) provide contamination protection
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Available variants include: open type (OP), clearance-adjustable (AJ), long type (L), and flange type
✅ When to Use LM40UU
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Ideal for 40 mm shaft diameter and medium-to-light load linear motion
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Handles approximately 2.16 kN of dynamic load
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Compact design suitable for limited-space applications
⚠️ Installation & Maintenance Tips
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Align straight when mounting to avoid damaging the ball retainer
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Use multiple bushings spaced appropriately for applications involving moment loads
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Not intended for rotational motion
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Avoid impact or excessive force during installation
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Use recommended lubricants (e.g., lithium-based grease, grade 2) for optimal performance
