This is the 12mm variant of the LM12LUU 12mm Bushing Longer Linear Ball Bearing in Bearings. Available at ₹145.14 (₹123.00 + GST) with free shipping across India.
PRODUCT DESCRIPTION
This LM12LUU 12mm Bushing Longer Linear Ball Bearing is an extended version of our standard LM12LUU linear slide bush that fits 12mm hardened steel shafts.
The Bearings provide a precise, safe and reliable linear motion system. They are commonly used in 3D printers and CNC (Computer Numerical Control) machines. This Linear Ball Bearing offers low friction motion along a single axis and has a wide range of applications in DIY and robotics prototyping.
This LM12LUU 12mm Bushing Longer Linear Ball Bearing is a closed type ball bushing with a 12mm bore and a 21 mm outer diameter. It can be used in a mounted slide unit to carry components.
The balls in the cage loop run along a smooth ball guide surface to ensure low noise even at high speeds.
Since Linear Motion bearings slide along the round shaft, the shaft must be lubricated for reliable and smooth motion. The quality of the linear motion depends on the quality of the shaft. Therefore, using a chrome plated and hardened shaft may be beneficial.
The linear motion bearings are available in more varieties as below
LM6LUU
LM8LUU
LM10LUU
LM16LUU
Features :
- Linear bearing ball cage, hardened coat of both ends ring.
- Made of carbon chromium bearing steel, safe and reliable.
- Ball in the cage loop to run a smooth ball guide surface to ensure stability even if high-speed.
Specification:
| Ball Circuits | 4 |
|---|---|
| Color: | silver |
| Length (mm): | 57 |
| Model | LM12LUU |
| Outer Casing | Chromium Steel |
| Outer Diameter(mm) | 21 |
| Shaft ID(mm) | 12 |
| Weight (gm) | 52 |
| Shipping Weight | 0.057 kg |
| Shipping Dimensions | 6.5 × 2.5 × 2.5 cm |
Package Includes :
1 x LM12LUU 12mm Bushing Longer Linear Ball Bearing
LM12LUU 12mm Bushing Longer Linear Ball Bearing Overview
The LM12LUU Longer Linear Ball Bearing is an extended closed‐type bushing designed for 12 mm hardened steel shafts. With a 21 mm outer diameter and chromium steel casing, it delivers precise, low‐friction linear motion ideal for CNC machines, 3D printers and robotics prototyping.
Key Features of LM12LUU 12mm Bushing Longer Linear Ball Bearing
- Inner diameter: 12 mm bore to fit standard 12 mm hardened shafts
- Outer diameter: 21 mm chromium steel casing for durability
- Extended length design for enhanced stability and load capacity
- Closed type ball bushing with 4 ball circuits for smooth, precise movement
- Hardened end rings and ball cage loop ensure low noise at high speeds
- Safe, reliable operation with minimal maintenance
- Fast shipping from Zbotic India—orders processed within 24 hours
Applications and Use Cases
- Linear motion guides in 3D printers for X- and Y-axis stability
- CNC router and milling machine slide assemblies
- Robotics arms and gantry systems requiring precise straight-line travel
- DIY automation projects and prototype rigs
- Pick-and-place modules in small manufacturing setups
- XY positioning tables for laser engravers and plotters
How to Use LM12LUU 12mm Bushing Longer Linear Ball Bearing
Slide the LM12LUU bearing onto a clean, hardened 12 mm shaft and secure it within a compatible linear block or housing. Ensure the shaft is aligned and lubricated with light machine oil or PTFE grease to maintain smooth, low-friction motion. Regularly inspect and re-lubricate to extend service life.
Why Buy from Zbotic?
- Genuine Products: All items sourced from authorized distributors
- Fast Shipping: Orders ship within 24 hours with tracking (non backordered products)
- Free Shipping: Free delivery on qualifying orders
- COD Available: Cash on Delivery, UPI, cards, net banking
- Technical Support: Expert help for setup and troubleshooting
- Easy Returns: Hassle-free replacement for defective products
Frequently Asked Questions
What shaft materials are compatible with the LM12LUU bearing?
The LM12LUU is designed for use with 12 mm hardened steel shafts. Standard ground shafts with HRC 58–62 hardness ensure the best wear resistance and smooth motion.
Can I use this bearing in a vertical orientation?
Yes. In vertical setups, secure the bearing in a rigid housing or block to prevent axial play. Adequate lubrication will maintain low friction and prevent ball cage wear under gravity loading.
How often should I lubricate the LM12LUU bearing?
For light to moderate use, apply a small amount of PTFE grease or light machine oil every 2–3 months. In continuous high‐speed or dusty environments, inspect monthly and re-lubricate as needed.
Technical Specifications
| Model | LM12LUU |
|---|---|
| Size | 12mm |
| SKU | AI2967 |
| Weight | 0.07 kg |
| Availability | In Stock |
Applications & Use Cases
The LM12LUU 12mm Bushing Longer Linear Ball Bearing is a versatile bearings used across a wide range of applications including 3D printer motion systems, CNC machines, conveyor belts, robotic joints, and motor shafts.
Common use cases:
- Replacing worn bearings in a 3D printer
- Building a CNC linear motion system
- Adding smooth rotation to a robotic arm joint
This product is ideal for mechanical engineers, 3D printer owners, and CNC builders.
Technical Tip: Linear bearings (LM8UU) for smooth rail motion; ball bearings for rotational applications. Keep bearings lubricated for long life.
Shipping & Delivery
- Free shipping on orders above ₹999 across India
- Dispatched within 1-3 business days
- Expected delivery: 3-7 business days depending on location
- Secure packaging to ensure safe transit of electronic components
