Plastic Linear Bearings
Description
Plastic linear bearings are components used in mechanical systems to facilitate smooth linear motion. They are designed to support and guide moving parts along a straight path, reducing friction and wear between the moving surfaces. These bearings are typically made from high-performance plastic materials that offer self-lubricating properties, eliminating the need for additional lubrication.
Working Principle
Plastic linear bearings operate by sliding rather than rolling, which distinguishes them from traditional ball bearings. They are impregnated with solid lubricants that are transferred onto the shaft during operation, reducing the coefficient of friction and minimizing wear. This self-lubricating feature ensures smooth motion and extends the operating life of the bearing. The fiber-reinforced materials used in these bearings maintain their strength and resistance to high forces and edge loads, making them suitable for various applications .
Applications
Plastic linear bearings are used in a wide range of applications due to their versatility and durability. Specific examples include:
- Agricultural Equipment: They are ideal for use in outdoor machinery where exposure to dirt and dust is common.
- Medical Devices: Their corrosion resistance and maintenance-free operation make them suitable for medical equipment.
- Automotive Industry: Used in various components where lightweight and corrosion resistance are critical.
- Material Handling: Employed in systems where smooth and reliable linear motion is required .
Advantages over other Linear Bearings
Plastic linear bearings offer several advantages over traditional ball bearings:
- Cost-Effectiveness: They are generally less expensive due to lower production costs and the elimination of the need for grease fittings and lubrication systems .
- Maintenance-Free: These bearings do not require regular maintenance or external lubrication, reducing downtime and operational costs .
- Corrosion Resistance: Unlike metal bearings, plastic bearings are resistant to corrosion, making them suitable for use in harsh environments .
- Contamination Handling: They handle contamination well, as particles can embed into the bearing material without affecting performance .
Limitations
Despite their advantages, plastic linear bearings have some limitations:
- High Load and Speed: They are not suitable for applications involving high loads combined with high speeds, as this can lead to excessive frictional heat buildup and wear .
- Precision: Plastic bearings have a higher running clearance compared to ball bearings, making them less ideal for applications requiring extreme precision .
- Temperature Sensitivity: They are not recommended for use in environments with long-term temperatures exceeding 484 degrees Fahrenheit .
Considerations
When considering plastic linear bearings, several factors should be taken into account:
- Initial Costs: While generally lower than metal bearings, the initial cost can vary depending on the specific material and design requirements.
- Operating Expense: The maintenance-free nature of plastic bearings can lead to lower operating expenses over time.
- Durability: They offer good durability in environments where contamination and corrosion are concerns, but may not be as durable under high load and speed conditions.
- Accuracy: Due to their higher running clearance, they may not be suitable for applications requiring high precision.
- Replacement and Maintenance Costs: The ease of replacement and lack of maintenance requirements can result in cost savings over the bearing's lifecycle .
from igus® inc.
Open, anodized aluminum housing, standard. Contains JUMO-01-XX liner made of iglide ® J is fitted as standard. Adjustable clearance: with 2 set screws (DIN 913) one side of the block can be adjusted. Recommended tolerance for the shaft: h6-h10. Also available with the following liners: TUMO-01:... [See More]
- Special Bearing Materials: Plastic
- Bearing Width: 1.69 to 5.2
- Bearing Type: Plain / Journal
- Bearing Diameter: 0.4724 to 1.97
from MPS Micro Precision Systems AG
Miniature high precision linear bearings DBL series with plastic body (POM), with stainless steel balls and needles. [See More]
- Special Bearing Materials: Plastic; Polyoxymethylen (POM) housing and stainless steel balls and needles
- Bearing Width: 0.6693
- Bearing Type: Bushing (Ball)
- Bearing Diameter: 0.3937
from igus® inc.
Special Properties. Open, anodized aluminum housing. Liner JUI-01 made from iglide ® J contained according to standard tolerances. Can be fitted with T500 liner material for temperatures up to 356 °F [See More]
- Special Bearing Materials: Plastic
- Bearing Width: 2 to 6
- Bearing Type: Plain / Journal
- Bearing Diameter: 0.5000 to 2
from MPS Micro Precision Systems AG
Miniature high precision linear bearings DBL series with plastic body (POM), with stainless steel balls and needles. [See More]
- Special Bearing Materials: Plastic; Polyoxymethylen (POM) housing and stainless steel balls and needles
- Bearing Width: 0.7480
- Bearing Type: Bushing (Ball)
- Bearing Diameter: 0.4724
from igus® inc.
Special features. Closed, anodized aluminum adapter. Dimensions equivalent to the standard for recirculating ball bearings. Equipped with JUM-02 liners made from iglide ® J. Secured by pressfit in recommended housing bore. Recommended housing bore H7 [See More]
- Special Bearing Materials: Plastic; Anodized Aluminum; Corrosion Resistant.; Rotary Motion
- Bearing Diameter: 0.4724 to 1.97
- Bearing Type: Plain / Journal
- Bearing Length: 1.1 to 2.76
from MPS Micro Precision Systems AG
Miniature high precision linear bearings DBL series with plastic body (POM), with stainless steel balls and needles. [See More]
- Special Bearing Materials: Plastic; Polyoxymethylen (POM) housing and stainless steel balls and needles
- Bearing Width: 0.8661
- Bearing Type: Bushing (Ball)
- Bearing Diameter: 0.4724
from igus® inc.
iglide ® A350 is an iglide ® plastic bushing developed for the food industry. In addition to high temperature resistance, the A350 material has good wear resistance and low coefficients of friction. Maintenance-free. Lubrication free. High abrasion resistance. Low coefficients of friction. [See More]
- Special Bearing Materials: Plastic; Corrosion Resistant.
- Bearing Width: 0.4724 to 1.18
- Bearing Type: Plain / Journal
- Bearing Diameter: 0.2362 to 0.7874
from MPS Micro Precision Systems AG
Miniature high precision linear bearings DBL series with plastic body (POM), with stainless steel balls and needles. [See More]
- Special Bearing Materials: Plastic; Polyoxymethylen (POM) housing and stainless steel balls and needles
- Bearing Width: 1.02
- Bearing Type: Bushing (Ball)
- Bearing Diameter: 0.6299
from igus® inc.
Special Features. Flange housing made from anodized aluminum, round flange. Liner JUM-01-xx liner made from iglide ® J as standard [See More]
- Special Bearing Materials: Plastic
- Bearing Width: 0.6299 to 3.7
- Bearing Type: Plain / Journal
- Bearing Diameter: 0.3150 to 1.97
from MPS Micro Precision Systems AG
Miniature high precision linear bearings DBL series with plastic body (POM), with stainless steel balls and needles. [See More]
- Special Bearing Materials: Plastic; Polyoxymethylen (POM) housing and stainless steel balls and needles
- Bearing Width: 1.26
- Bearing Type: Bushing (Ball)
- Bearing Diameter: 0.7874
from igus® inc.
Special Features. Flange housing made from anodized aluminum, square flange. Contains JUM-01-xx liner made from iglide ® J is included as standard [See More]
- Special Bearing Materials: Plastic
- Bearing Width: 0.6299 to 4.41
- Bearing Type: Plain / Journal
- Bearing Diameter: 0.3150 to 1.97
from MPS Micro Precision Systems AG
Miniature high precision linear bearings DBL series with plastic body (POM), with stainless steel balls and needles. [See More]
- Special Bearing Materials: Plastic; Polyoxymethylen (POM) housing and stainless steel balls and needles
- Bearing Width: 1.57
- Bearing Type: Bushing (Ball)
- Bearing Diameter: 0.9843
from igus® inc.
Special Features. Open anodized aluminum housing, long design. Contains JUMO-01-xx liner [See More]
- Special Bearing Materials: Plastic
- Bearing Width: 1.69 to 5.2
- Bearing Type: Plain / Journal
- Bearing Diameter: 0.4724 to 1.97
from MPS Micro Precision Systems AG
Miniature high precision linear bearings DBL series with plastic body (POM), with stainless steel balls and needles. [See More]
- Special Bearing Materials: Plastic; Polyoxymethylen (POM) housing and stainless steel balls and needles
- Bearing Width: 0.2756
- Bearing Type: Bushing (Ball)
- Bearing Diameter: 0.1181
from igus® inc.
Special Features. Closed anodized aluminum housing, short design. Contains JUM-02-XX liner [See More]
- Special Bearing Materials: Plastic
- Bearing Width: 1.57 to 4.06
- Bearing Type: Plain / Journal
- Bearing Diameter: 0.3937 to 1.97
from MPS Micro Precision Systems AG
Miniature high precision linear bearings DBL series with plastic body (POM), with stainless steel balls and needles. [See More]
- Special Bearing Materials: Plastic; Polyoxymethylen (POM) housing and stainless steel balls and needles
- Bearing Width: 0.3150
- Bearing Type: Bushing (Ball)
- Bearing Diameter: 0.1575
from igus® inc.
Special Features. Closed anodized aluminum housing, long design. Contains JUM-01-XX liner made from iglide ® J [See More]
- Special Bearing Materials: Plastic
- Bearing Width: 1.38 to 4.13
- Bearing Type: Plain / Journal
- Bearing Diameter: 0.4724 to 1.97
from MPS Micro Precision Systems AG
Miniature high precision linear bearings DBL series with plastic body (POM), with stainless steel balls and needles. [See More]
- Special Bearing Materials: Plastic; Polyoxymethylen (POM) housing and stainless steel balls and needles
- Bearing Width: 0.3937
- Bearing Type: Bushing (Ball)
- Bearing Diameter: 0.1969
from igus® inc.
Special Features. Adjustable anodized aluminum housing, short design. Contains liner JUM-02 made of iglide ® J. With adjustable clearance for shaft dimensions 12 to 40 mm [See More]
- Special Bearing Materials: Plastic
- Bearing Width: 1.57 to 4.06
- Bearing Type: Plain / Journal
- Bearing Diameter: 0.4724 to 1.97
from MPS Micro Precision Systems AG
Miniature high precision linear bearings DBL series with plastic body (POM), with stainless steel balls and needles. [See More]
- Special Bearing Materials: Plastic; Polyoxymethylen (POM) housing and stainless steel balls and needles
- Bearing Width: 0.4724
- Bearing Type: Bushing (Ball)
- Bearing Diameter: 0.2362
from igus® inc.
Special Features. Closed, anodized aluminum housing, long design. Contains JUM-01-xx liner. Same properties as standard pillow blocks. Compensation of parallelism errors up to 6 mm. Compensates for angular errors and bending of the shaft [See More]
- Special Bearing Materials: Plastic
- Bearing Width: 1.69 to 3.43
- Bearing Type: Plain / Journal
- Bearing Diameter: 0.4724 to 1.18
from MPS Micro Precision Systems AG
Miniature high precision linear bearings DBL series with plastic body (POM), with stainless steel balls and needles. [See More]
- Special Bearing Materials: Plastic; Polyoxymethylen (POM) housing and stainless steel balls and needles
- Bearing Width: 0.5906
- Bearing Type: Bushing (Ball)
- Bearing Diameter: 0.3150
from igus® inc.
Special Features. Open, anodized aluminum housing, long design. Contains JUMO-01-xx liner. Compensation of parallelism errors up to 6mm. Compensates for angular errors and bending of the shaft [See More]
- Special Bearing Materials: Plastic
- Bearing Width: 1.69 to 3.43
- Bearing Type: Plain / Journal
- Bearing Diameter: 0.4724 to 1.18
from igus® inc.
Features. Housing: Aluminum. Equipped with DryLin ® R linear plain bearings, order number RJUM-01- ø or RJUM-03- ø. Can be combined with DryLin ® R housing bearing, part number RJUM-06- ø. Bearings are secured with retaining rings according to DIN 472. Recommended... [See More]
- Special Bearing Materials: Plastic; Corrosion Resistant.
- Bearing Width: 0.7874 to 2.2
- Bearing Type: Plain / Journal
- Bearing Diameter: 0.4724 to 1.57
from igus® inc.
Features. Housing: Aluminum. Equipped with DryLin ® R linear plain bearings, order number RJUM-01- ø, RJUM-03- ø or RJM-01. Can be combined with DryLin ® R housing bearing, order number RJUM-06- ø. Bearings are secured with retaining rings according to DIN 472. [See More]
- Special Bearing Materials: Plastic; Corrosion Resistant.
- Bearing Width: 1.38 to 4.25
- Bearing Type: Plain / Journal
- Bearing Diameter: 0.1260 to 0.4055
from igus® inc.
Features. Housing: Aluminum. Equipped with DryLin ® R linear plain bearings, order number OJUM-01- ø or OJUM-03- ø. Combinable with DryLin ® R housing bearing, order number OJUM-06- ø. The bearings are secured in the housing using set screws. Recommended tolerance for... [See More]
- Special Bearing Materials: Plastic; Corrosion Resistant.
- Bearing Width: 1.69 to 5.2
- Bearing Type: Plain / Journal
- Bearing Diameter: 0.1654 to 0.5610
from igus® inc.
Features. Housing: Aluminum. Equipped with DryLin ® R linear plain bearings, order number OJUM-01- ø or OJUM-03- ø. Can be combined with with DryLin ® R housing bearing, order number OJUM-06- ø. Bearings secured using set screws. Recommended tolerance for the shaft:... [See More]
- Special Bearing Materials: Plastic; Corrosion Resistant.
- Bearing Width: 0.7874 to 2.2
- Bearing Type: Plain / Journal
- Bearing Diameter: 0.4724 to 1.57
from igus® inc.
Special Features. Closed, anodized aluminum adapter. Dimensions equivalent to the standard size for recirculating ball bearings. Equipped with JUM-01 liners made from iglide ® J. Secured by retaining clips according to DIN 471 or 472 (not included in delivery). Recommended housing bore H7 [See More]
- Special Bearing Materials: Plastic
- Bearing Width: 0.4724 to 2.95
- Bearing Type: Plain / Journal
- Bearing Diameter: 0.1969 to 1.97
from igus® inc.
Features. Hard anodized aluminum adapter. Dimensionally interchangeable with linear ball bearings. Equipped with liner made from iglide ® J. Temperature range -40 °F to +194 °F JUI-01 (standard), JUI-20 (low clearance). T500 liner optional for chemicals/high temps (up to 482 °F for... [See More]
- Special Bearing Materials: Plastic; Corrosion Resistant.
- Bearing Width: 0.6173 to 2.99
- Bearing Type: Plain / Journal
- Bearing Diameter: 0.3750 to 2
from igus® inc.
Special features. Anodized aluminum adapter. Dimensions interchangeable with linear ball bearings. Equipped with liner made from iglide ® J: temperature range -40 °F to +194 °F. JUI-01 (standard). T500 liner optional for chemicals/high temps (up to 482 °F for steek housing, 356... [See More]
- Special Bearing Materials: Plastic; Anodized Housing; Corrosion Resistant.; Rotary Motion
- Bearing Width: 0.8750 to 3
- Bearing Type: Plain / Journal
- Bearing Diameter: 0.5000 to 2
from igus® inc.
Advantages of DryLin ® R. Self-lubricating. Maintenance-free. Can be used in extreme dirt conditions. Can be used underwater or in washdown conditions. Replaceable liner. Dimensionally interchangeable with standard recirculating ball bearings. Vibration dampening. No seals or wipers needed [See More]
- Special Bearing Materials: Plastic; Anodized Aluminum Housing; Corrosion Resistant.; Rotary Motion
- Bearing Width: 0.8556 to 2.96
- Bearing Type: Plain / Journal
- Bearing Diameter: 0.5000 to 2
from igus® inc.
Special features. Anodized aluminum adapter. Dimensionally interchangeable with recirculating ball bushings. Equipped with liner made from iglide ® J. Temperature range -40 °F to +194 °F JUI-01 (standard), JUI-20 (low clearance). T500 liner optional for chemicals/high temps (up to 482... [See More]
- Special Bearing Materials: Plastic; Anodized Housing; Corrosion Resistant.; Rotary Motion
- Bearing Width: 0.5000 to 3
- Bearing Type: Plain / Journal
- Bearing Diameter: 0.5000 to 3
from igus® inc.
Special features. Anodized aluminum adapter. Dimensionally interchangeable with linear ball bearings. Equipped with liner made from iglide ® J: temperature range -40 °F to +194 °F, JUI-01 (standard). T500 liner optional for chemicals/high temps (up to 482 °F for steel housing, 356... [See More]
- Special Bearing Materials: Plastic; Anodized Aluminum; Corrosion Resistant.; Rotary Motion
- Bearing Width: 0.8750 to 3
- Bearing Type: Plain / Journal
- Bearing Diameter: 0.5000 to 2
from igus® inc.
Special features. Split aluminum adapter with spherical middle area for automatic compensation of misalignments and O-rings for elastic seating. Dimensions correspond otherwise to the standard for recirculating ball bearings. Mounted with JUI-01 liners. Recommended housing bore H7. Recommended... [See More]
- Special Bearing Materials: Plastic; Anodized Aluminum; Corrosion Resistant.; Rotary Motion
- Bearing Width: 0.8750 to 3
- Bearing Type: Plain / Journal
- Bearing Diameter: 0.5000 to 2
from igus® inc.
Special Features. Very low coefficients of friction while running dry. Very high wear resistance. Maintenance-free. Vibration dampening. Very low moisture absorption. High chemical resistance. Suitable for rotating, oscillating and linear movements [See More]
- Special Bearing Materials: Plastic
- Bearing Width: 0.4724 to 2.17
- Bearing Type: Plain / Journal
- Bearing Diameter: 0.3937 to 1.97
from igus® inc.
Special Features. Very low coefficients of friction while running dry. Very high wear resistance. Maintenance-free. Vibration dampening. Very low moisture absorption. High chemical resistance. Suitable for rotating, oscillating and linear movements [See More]
- Special Bearing Materials: Plastic
- Bearing Width: 0.4724 to 2.17
- Bearing Type: Plain / Journal
- Bearing Diameter: 0.3937 to 1.97