LM40 UU Linear Ball Bearing - 40 mm Shaft, Double-Sealed

LM40 UU Linear Ball Bearing - 40 mm Shaft, Double-Sealed

The Economy LM40 UU Linear Ball Bearing is a reliable, budget-friendly linear bushing designed for 40 mm shafts. It features sturdy steel housing, resin ball retainer, and dual rubber seals (UU). This widely searched-bearing appears under terms like LM40UU, linear bearing 40x60x80, sealed linear bushing, and economy linear ball bearing.

Key Features:

• Inner diameter: 40 mm

• Outer diameter: 60 mm, length: 80 mm

• Steel outer sleeve, resin or steel cage, 6 rows of balls

• Double rubber seals (UU) for dust & moisture protection

• Pre-lubricated with light grease for immediate use

• Tolerance: standard Japanese H7 for accurate mounting

• Operational specs: speeds up to ~5 m/s, temperature range -20°C to +80°C

Great for linear motion systems in CNC machines, 3D printers, robotics, automation, lab equipment, packaging, and industrial devices.

Benefits for Buyers

• 🛡️ Dust & moisture-resistant - thanks to UU seals

• 💲 Economy class quality - cost-effective without compromising precision

• 🔧 Plug & play - pre-lubricated, ready for installation

• 🔩 Standard size - compatible with typical 40x60x80 linear shafts

• ⚙️ Smooth linear motion - low friction and noise

FAQ

Q1: What does “UU” mean?
A: Double rubber seals on both ends, protecting against contaminants.

Q2: Where is Economy LM40 UU used?
A: CNC, 3D printing, robotics, automation, lab & packaging machines.

Q3: What tolerances does it use?
A: Japanese standard tolerance H7 for precise fit.

Q4: Do I need to lubricate it?
A: It arrives pre-lubricated and ready for use; relubrication can be done later.

Q5: What temperature range does it support?
A: From -20 °C to +80 °C for reliable operation in most environments.