1. Before installing the imported bearing on the shaft, the fixing pin of the bearing shell must be unplugged, and the surface of the journal should be smoothed and cleaned, and the oil is rust-proof and lubricated at the journal (allowing the bearing to rotate slightly on the shaft).
2. Apply lubricant to the bearing seat and bearing mating surface, and install the bearing into the bearing housing. Then the assembled bearing is placed on the shaft together with the NSK bearing. Push to the desired location for installation.
3. The bolts of the fixed bearing housing should not be tightened first, so that the bearing housing can rotate in the bearing housing. Also install the other end bearing and seat on the same shaft, turn the shaft a few turns, and let the bearing itself automatically find the position. Then tighten the bearing block bolts.
4. Install the eccentric sleeve. First, eccentric sleeve is placed on the eccentric step of the inner sleeve of the bearing, and the shaft is tightened by hand in the direction of rotation. Then insert or hold the small iron rod against the counterbore on the eccentric sleeve. 1. Use the hammer to strike the small iron rod in the direction of rotation of the shaft. Install the eccentric sleeve securely and finally lock the socket head cap screws on the eccentric sleeve.
Nsk bearing disassembly:
1. Disassembly of the outer ring
To remove the outer ring of the interference fit, install a few outer ring extrusion screw screws on the circumference of the outer casing, and tighten the screw evenly while disassembling. These screw holes are usually covered with a blind plug, a split-type NSK bearing such as a tapered roller, and a plurality of slits are provided on the outer shoulder of the outer casing, and the spacer is used, disassembled by a press, or gently tapped to remove.
2. Disassembly of cylindrical hole NSK bearing
The removal of the inner ring can be pulled out by the pressure machine. At this point, pay attention to let the inner ring withstand its pulling force. The inner ring of large NSK bearings is dismantled by hydraulic method. Oil pressure is applied through an oil hole provided on the shaft to make it easy to pull. The NSK bearing with a large width is used in combination with the hydraulic chucking method for the disassembly work. The inner ring of the NU type and NJ type cylindrical roller NSK bearings can be removed by induction heating. A method of heating a part in a short time to expand and pull the inner ring.
3, the removal of the tapered hole NSK bearing
Disassemble the relatively small NSK bearing with adapter sleeve, support the inner ring with the block fastened on the shaft, turn the nut back a few times, and use the ram to knock and disassemble. Large NSK bearings are easier to disassemble by hydraulic pressure. The oil is pumped in the oil hole on the taper shaft to expand the inner ring and remove the NSK bearing. In operation, there is a possibility that the NSK bearing suddenly comes out. It is better to use the nut as a block.
Http://news.chinawj.com.cn Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn
Flat Field Holographic Concave Grating
The Concave Grating has the advantage of being able to constitute a spectroscopic system without any assistance from concave mirrors or similar types of image-forming elements. For this reason,the Concave Grating is used in a wide range of applications, such as analytical instruments,optical communications,biotechnology,and medical instruments. Spectroscopes incorporating concave gratings are classified roughly into two groups: polychromators or monochromators.
China star optics can provide customers with a variety of replicated grating products such as diffraction gratings, reflective gratings,holographic gratings,concave gratings etc. to meet different needs. Maximum ruled area is up to 300x300mm2 for plane ruled diffraction gratings. For replicated diffraction and transmission gratings the ruling density can be from 20 grooves per millimeter to 2400 grooves per millimeter, wavelength from 0.2 micron to 25 microns.
Please contact us for Customing Sizes and types of gratings.
Holographic gratings:
Specifications:
Ruled area: <=70 * 70mm
Wavelength range: 0.2-0.8um
Grooves per mm: 1,200 to 3,600L/mm
Diffraction: >70%
Ruled gratings:
Specifications:
Ruled area: <=70 * 70mm
Wavelength range: 0.2-15um
Grooves per mm: 50 to 2,400L/mm
Diffraction: >70%
Concave gratings:
Specifications:
Ruled area: <=70 * 70mm
Wavelength range: 200 to 900um
Grooves per mm: 490 to 1,200L/mm
Diffraction: >70%
Flat Field Holographic Concave Grating,Flat Field Concave Grating,Spherical Holographic Grating,Aberration Corrected Holographic Grating
China Star Optics Technology Co.,Ltd. , https://www.opticsrealpoo.com