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Precision Linear Bearings Series L
Description
Bore Diameter 2 ... 6 mm
Outer Diameter 4 ... 12 mm
Load Rating, Static 8 ... 250 N
Load Rating, Dynamic 10 ... 245 N
Precision Linear Bearings DBL Series
Description
Bore Diameter 3 ... 25 mm
Outer Diameter 7 ... 40 mm
Load Rating, Static 27 ... 1332 N
Load Rating, Dynamic 26 ... 1162 N
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MicroGuide
Features
* Industry standard, drop-in replacement
* 440C stainless steel construction (little or no lubrication required)
* High precision accuracy (up to ±0.01mm)
* Whisper quiet movement
* Extremely smooth operation
* Unlimited Stroke
* Gothic arch ball groove geometry enables single rail application
* Technical engineering support from Danaher Motion
* Contact Danaher Motion for custom lengths and configurations
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Bearing Tolerances
max. interferance fit of outer ring: 1 to 3 µm
recommended shaft tolerances: +0 to -6 µm
outside diameter: 0 to -8 µm
bore diameter: 8 to -0 µm
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NSK manufactures a full range of metric and inch size miniature ball bearings with bore diameters of less than 10mm. These can be divided into two basic types, deep groove and angular contact ball bearings.
Deep groove ball bearings are the most common and NSK offer several variants for miniature sizes:
Standard type
Flanged outer ring type
Extended inner ring type
Synchro bearings with thick section outer rings
Extra-thin section type
In addition, NSK can also provide these bearings with shields or seals (contact or non-contact) on one or both sides of the bearing and pre-lubricated with grease.
For applications requiring higher speed, rigidity or axial load capacity, then miniature angular contact bearings are also available.
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Deep groove ball bearings are available in a variety of sizes, and are the most popular of all rolling bearings. This type of bearing supports radial load and a certain degree of axial load in both directions simultaneously.
Extra-small ball bearings and miniature ball bearings:
The open type is widely used. Also available are the shielded / sealed type and the flanged type; the latter is easily positioned in the axial direction.
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Miniature Precision Ball Bearings
Ball bearings are machined components that include an outer ring, inner ring, balls, retainers, shields and snap rings. NMB's miniature ball bearings are available in inch and metric sizes, open or shielded and flanged or unflanged. For extreme noise sensitive applications, superior hardness and corrosion resistance our ball bearings are manufactured with DD400™ stainless steel material. Chrome steel is availablle for applications in uses and environments where corrosion resistance is not a critical factor.
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BNL now offers a range of higher performance miniature plastic bearings designed to directly replace steel bearings in many demanding long-life light-load applications.
Produced to meet the demanding performance needs of business machines, office equipment and other light duty mechanical applications. Already approved and supplied to the leading OEM manufacturers worldwide.
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Ball Bearings
Ball bearings are machinery components, which comprise an outer ring, inner ring, balls, retainers, shields and snap rings. Miniature bearings and small-sized ball bearings have up to 30mm in external diameter. Essential to high-precision rotary components, ball bearings determine rotational accuracy.
Bearing types include Radial Ball Bearings (Deep Groove and Angular Contact) and Thrust Ball Bearings. Radial bearings are designed to carry both radial and axial (thrust) loads, while thrust bearings are designed for pure thrust loads only. Many different configurations are available for ball bearings.
Miniature Bearings
Our miniature bearings range in sizes from .1181 to 1.000 inch O.D. (3mm to 26mm), and are available in inch and metric sizes.
Miniature bearings and instrument bearings are single row bearings. The construction of these miniature bearings enables them to carry moderate radial and thrust loads at low operating torque while providing high performance within a small envelope design. Miniature bearings and instrument bearings are typically available in both stainless steel for those applications requiring corrosion resistance and chrome for maximum fatigue life.
Minebea manufactures more than 8,500 different types of miniature and small-sized bearings, most of which have external diameters of 22mm or less.
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The bearings of industrial rotating equipment operate under arduous conditions - often for considerable periods of time. The most reliable indicator of bearing condition is the temperature of the metal beneath the shoe.
Recognition of rising temperature can provide a warning of the breakdown of the lubricating oil film; thus allowing machine shutdown and maintenance to take place - avoiding the probable catastrophic failure of the bearing and possible damage to its mounting. Conax Miniature Bearing Sensors provide a simple and cost-effective method to monitor bearing temperatures.
Features:
- For embedded applications in rotating machines
- RTDs - 100 ohm platinum, 0.00385 ohm/ohm/°C
- Thermocouples types J, K, T & E
- Single and duplex sensors
- Various styles and sizes
- Operating Temperature: to 250° F ( 120° C)
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Miniature Bearing (MBS) Sensor
A critical indication of the status of bearings on large rotating plant is provided by their running temperature.
Due to its small physical size the miniature bearing sensor can be positioned close to the bearing surface allowing it to sense any early change in temperature.
These devices are available in both thermocouple and PT100 resistance thermometer format and can be supplied as either single or duplex sensors. The sensor lead wire insulation is in PTFE and if necessary lead wire jackets can be protected with stainless steel outer braid.
BSWS Bearing sensor wire seal assemblies are low temperature/low pressure glands for embedded sensors to prevent oil wicking along the sensor leads. They seal on the individual insulated leads exiting an oil-filled bearing housing.
Typical aplications are motors, turbines, pumps & journal bearing pedestals.
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Yitong linear guideway – Compact rails - miniature linear guide.
Yitong compact rail linear guide system consists of a separated sliding carriage and a guide rail.
The guide rail is made of high quality carbon steel.
The sliding carriage is mounted with three pieces or more high quality LV series track rollers, two rollers are fixed on the block, and others are all with eccentric functions.
The sliding carriage could be dismounted from the rail very easily, which makes this guide system extremely convenient in mounting and adjusting.
The guide rails and the carriage block are all drilled with mounting holes, easy for mounting and less space required.
The preload of this Compact rail system could be adjusted freely to meet various application requirements.
This Compact rail system has a long service life. Track rollers are available on stock for customers’ replacement.
Custom drilled services on the rails are also available from YITONG.
Designation:
LTV-28-XXXX-X
LTV Code of Compact linear rails
XX: Width of the rail, e.g. 28 means the width 28mm.
XXXX: Length of the rail (mm).
X: Number of the rollers mounted on the carriage, 4 means 4 pieces (standard type is mounted with 3 pieces of roller, not specified.)
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