Linear Bushings Straight Short
Brand :
MISUMI
Caution
- - This product focuses on price competitiveness, and the unit price is low, but there may be rust, scratches, or scratches on the exterior. For those who place importance on product appearance, we recommend purchasing existing Misumi products rather than economy products. - If domestic stock is insufficient, the minimum order quantity may be temporarily increased. we ask For your understanding. - Due to the retainer color change (existing: black, changed: yellow), the color may differ from the representative image, and colors may be mixed and shipped.
- This product will be discontinued once stock ran out. The replacement model CLICK here
- Download Free! >>Economy Series Catalog ver2023 (TH-EN)_Part02 CLICK here
Product Description
Linear Bushings Straight Short
These Linear Bushings are an economy item, The price is cheaper than the MISUMI standard product.They offer a wide variety of sizes to choose from.
[Feature]
● Support Shaft Diameter (mm.): 6, 8, 10, 12, 13, 16, and 20
● Overall Length (mm.): 16, 20, 25, 30, and 35
● Shape : Straight
● Material:
- Housing - SUJ2 Equivalent
- Ball - SUJ2 Equivalent
[Application]
It is used in industrial machinery such as conveyor systems, packaging machines, and robotic equipment.
Economy SUJ2 Short Straight Linear Bushing
Space-savingAssured QualityOperating Environment
- Effective utilization of space in small mechanism designs.
- Selection based on operating environment, suitable for various conditions.
- Good interchangeability due to standardized sizing.
- Short length contributes to space-saving design.
- Assured quality at a lower price.
MISUMI Standard
Cheaper Price
Product Variety
3D CAD Support
Product Overview of Linear Bushings
Linear Bushings, Linear bearing is a linear type motion guiding mechanism matched with linear guide shaft. The steel ball rolls circularly along the track groove formed by the shell and the retainer, and the linear bearing reciprocates linearly relative to the guide shaft. Through the rolling of steel ball, high-efficiency movement with low friction resistance can be realized.
Product Features of Linear Bushings
Linear Bushings Feature 1: Effective utilization of space. The combination of the guide shaft and the linear bearing enables effective use of space, suitable for small mechanism designs.
Linear Bushings Feature 2: Selection can be made based on operating environment. The outer cylinder of the linear bearing is made of steel or stainless steel.
Linear Bushings Feature 3: Good interchangeability. Linear bearings have good interchangeability because they can be used with shafts randomly.
Linear Bushings Feature 4: Overall length (L dimension) is shorter than the single liner type, which contributes to the space-saving design in the direction of L dimension.
Linear Bushings Feature 5: Appropriate specifications can be selected according to the conditions of use.
Linear Bushings Feature 6: The holder size can be reduced with the short linear bearing.
Linear Bushings Feature 7: More cost effective than the linear guide.
Linear Bushings Feature 8: The economy series linear bearing has assured quality at lower price.
Linear Bushings Feature 2: Selection can be made based on operating environment. The outer cylinder of the linear bearing is made of steel or stainless steel.
Linear Bushings Feature 3: Good interchangeability. Linear bearings have good interchangeability because they can be used with shafts randomly.
Linear Bushings Feature 4: Overall length (L dimension) is shorter than the single liner type, which contributes to the space-saving design in the direction of L dimension.
Linear Bushings Feature 5: Appropriate specifications can be selected according to the conditions of use.
Linear Bushings Feature 6: The holder size can be reduced with the short linear bearing.
Linear Bushings Feature 7: More cost effective than the linear guide.
Linear Bushings Feature 8: The economy series linear bearing has assured quality at lower price.
Dimensional Drawing of Linear Bushings
Specifications Overview of Linear Bushings
■Material Specification Table of Linear Bushings
Due to short guiding part, it is not suitable for applications where moment is applied.
| Housing | Ball | Retainer | Operating Environment Temperature |  Accessories | ||
 Material |  Hardness |  Surface Treatment | Material | Material | ||
| Equivalent to SUJ2 | 58HRC～ | - | Equivalent to SUJ2 | Resin (Equivalent to DURACON M90) | -20 to 80℃ | Seal packing Material Nitrile Rubber |
Due to short guiding part, it is not suitable for applications where moment is applied.Usage Method of Linear Bushings
| Product Drawings of Linear Bushings | Instructions for use Linear Bushings | ||||||||
 | When the linear bearing is under heavy load (unbalanced load), one piece of single liner type is not applicable. It is recommended to use one piece of double liner type or multiple pieces of single liner type. | ||||||||
 | Linear bearing is not suitable for rotating motion in structure. If you rotate forcibly, it may cause damage to the product. Please pay attention during use. | ||||||||
 | Linear bearing is not suitable for repeated plugging and unplugging. | ||||||||
 | When inserting the guide shaft into the linear bearing, please align the center and insert it slowly, otherwise the steel ball will fall off or the retainer will be deformed. | ||||||||
Precautions of Linear Bushings
■ Linear Bushings Regular maintenance:
① Before use, please apply grease to the ball row inside the linear bearing, and then replenish it in due course. Grease forms an oil film on the surfaces of steel ball and rolling surface (guide shaft·bushing) of linear bearing, which effectively reduces friction and prevents sintering. Grease reduction and aging will greatly affect the life of linear bearing.
② Recommended grease: lithium soap grease.
for details. ③ Recommended grease filling interval: Usually every 6 months.
④When the moving distance is long, it is recommended to move once every three months or when the moving distance exceeds 1000km within the time limit, the 1000km shall prevail.
⑤ When the linear bearing is subjected to large moment load (eccentric load), one piece of single liner type is not applicable, so it is recommended to use one piece of double liner type or multiple pieces of single liner type.
■ Linear Bushings Dust prevention measures:
If dust or foreign matter enters the inside of the Linear Bushings, it may damage the circulation of steel balls, resulting in unexpected failures. When used in harsh environment, please install dust cover and protection cover, etc.
■ MISUMI linear bearing is recommended to be installed on the holder with H7 tolerance. The linear bearing is in clearance fit with the holder.
■ MISUMI linear bearing is recommended to be combined with guide shaft with quenching g6 tolerance.
■ Due to short guiding part, the short linear bearing is not suitable for applications where moment is applied.
① Before use, please apply grease to the ball row inside the linear bearing, and then replenish it in due course. Grease forms an oil film on the surfaces of steel ball and rolling surface (guide shaft·bushing) of linear bearing, which effectively reduces friction and prevents sintering. Grease reduction and aging will greatly affect the life of linear bearing.
② Recommended grease: lithium soap grease.
for details. ③ Recommended grease filling interval: Usually every 6 months.
④When the moving distance is long, it is recommended to move once every three months or when the moving distance exceeds 1000km within the time limit, the 1000km shall prevail.
⑤ When the linear bearing is subjected to large moment load (eccentric load), one piece of single liner type is not applicable, so it is recommended to use one piece of double liner type or multiple pieces of single liner type.
■ Linear Bushings Dust prevention measures:
If dust or foreign matter enters the inside of the Linear Bushings, it may damage the circulation of steel balls, resulting in unexpected failures. When used in harsh environment, please install dust cover and protection cover, etc.
■ MISUMI linear bearing is recommended to be installed on the holder with H7 tolerance. The linear bearing is in clearance fit with the holder.
■ MISUMI linear bearing is recommended to be combined with guide shaft with quenching g6 tolerance.
■ Due to short guiding part, the short linear bearing is not suitable for applications where moment is applied.
Related Documents of Linear Bushings
For the usage method, please refer to 
Usage Method of Linear Bushings.
For anti-rust performance and maintenance of metal materials and their surface treatment, please refer to Anti-rust Performance.
Usage Method of Linear Bushings.For anti-rust performance and maintenance of metal materials and their surface treatment, please refer to
Anti-rust Performance.Application Industries of Linear Bushings
| Electronic & Electrical Appliances | Automotive | Lithium battery | ||
 |  |  | ||
| LCD | Smart phone | Semiconductor | ||
 |  |  |
Related Products of Linear Bushings
Dimensional Drawing
Specification Table
■Material Specification Table
■Dimension Specification Table
Due to short guiding part, it is not suitable for applications where moment is applied.
| Housing | Ball | Retainer | Operating Environment Temperature | Accessories | ||
| Material | Hardness | Surface Treatment | Material | Material | ||
| Equivalent to SUJ2 | 58HRC～ | - | Equivalent to SUJ2 | Resin (Equivalent to DURACON M90) | -20 to 80℃ | Seal packing Material Nitrile Rubber |
■Dimension Specification Table
| Part Number | D | L | Lateral Misalignment (maximum) | Number of ball rows | Basic Rated Load | Weight (g) | ||||
| dr | Tolerance | Tolerance | Tolerance | C (Dynamic) N | Co (Static) N | |||||
| 6 | 0 -0.01 | 12 | 0 -0.011 | 16 | 0 -0.3 | 0.015 | 4 | 113 | 155 | 6.6 |
| 8 | 15 | 20 | 155 | 226 | 14.7 | |||||
| 10 | 0 -0.012 | 19 | 0 -0.016 | 25 | 0 -0.3 | 254 | 359 | 26.1 | ||
| 12 | 21 | 317 | 407 | 28.6 | ||||||
| 13 | 0 -0.015 | 23 | 0 -0.018 | 0 -0.3 | 320 | 413 | 36.3 | |||
| 16 | 28 | 30 | 5 | 582 | 724 | 60 | ||||
| 20 | 0 0.018 | 32 | 0 -0.02 | 35 | 0 -0.35 | 0.02 | 777 | 1034 | 81.6 | |
Due to short guiding part, it is not suitable for applications where moment is applied.