Heat resistant bearing steel M50 as exposure to high load, high speed, high temperature air machine engine bearing materials is in the 1960 s by the research and development of high speed tool steels. Datong special steel company's high-performance M50 also bearing, as an engine of aviation machine is capable of carrying, high reliability of material. Aviation machine engine shaft parts of the highest temperature of 400 ℃. Requirements in such a high temperature Buy SKF Bearing Online has the following properties: 1) high temperature hardness, (2) the high temperature strength is high, (3) high temperature toughness, (4) the fatigue life is long, slow crack propagation on the 6 small size change.Heat resistant bearing steel M50 and installation
Carbide morphology controlled high performance M50 showed high fatigue life characteristics, its characteristic is: from melting, forging and rolling to construct production management for heat treatment, control the carbide morphology, carbide micro evenly distributed; Through double vacuum melting, minimize the size of inclusions, reducing the quantity of inclusions, thus improve the cleanliness.
The installation of the bearings are accurate will directly affect the use of precision, the survival of the fixed number of year and performance. Because of this, only to master the accurate bearing installation technology knowledge ability to ensure the bearing performance. Assembly department with the relevant positions of people deal with bearing installation steps are fully understood, and strict execute roll installation in accordance with the operation standard.
The installation of four row circular cone roller bearings:
Bearing installation before dealing with the appropriate components, roll neck, bearing, bearing plate, tightly closed parts, bearing lubricating oil channel and ventilation eye carefully investigation, seizing the relevant size, style and location precision and tolerance are accord with the technical requirements of the preset and bearing the appropriate appearance, roll neck, bearing and oil hole edge and burr are sure to remove them completely, and clean and tidy coated with lubricating oil at any time four row circular cone roller bearings shall be according to accurately follow the sequence tags stacked assembly, iron, Ken enterprises using letters marking system to guarantee the accuracy of the bearing according to follow the order of installation, bearing components from A to E done tag and accurately follow along the stacked sequence of letters, when bearing load bearing component can be A face or E face down, but the device must maintain accurate follow the order before the bearing load bearing seat, should be seizing bearing card, confirm to use bearing load bearing area, each bearing outer ring of bearing area tags, spin bearing area code should be accurate to bearing area in the bearing hole coated with A thin layer of lubricating oil or grease can convenient assembly and slow running in the friction between the bearing outer ring and bearing hole and the corrosion will be at the bottom of the bearing outer ring into whether need feeler gauge after seizing the bearing outer ring must sit on the bearing block shoulder position installed bearing end cover, first of all, don't put metal gasket, average tighten equidistant four screws until the bearing cover press on the bearing outer ring, exploration of three different location of the gap, gap even value.Heat resistant bearing steel M50 and installation
To load the shim thickness must be smaller than gap G score 0.05 mm, in order to ensure the bearing end cover and tighten. Because of the difference of bearing outer ring width, the thickness of a given metal gasket can be used for no other bearing installed bearing end cover and into the appropriate thickness of metal gasket with fixed torque tighten all end cover screw will level setting and load bearing oil seal, infusion lubricating agent cleaning roll neck and coating lubricant agent, chamfering ring tightly closed contact appearance also want to apply, and then install the bearings and bearing components to the roll neck and seizing whether to sit in the position in place when installing locking mechanism (11) pay attention to the bearing inner ring end face top can't die, should guarantee the reserved 0.5 to 1 mm gap. The installation of axial thrust bearing TDIK:Heat resistant bearing steel M50 and installation
If there is keyway on outer ring structure, to ensure that the key must be validly screw at the bottom of the bearing seat, and the key on the outer ring keyway and housings, corresponding to the bottom of the outer ring into the bearing load bearing bearing inner ring components will be the top bearing end cover buckle in bearing actors dress up into the bearing seat, all devices include bearing cover, outer ring and bearing must be reliable contact and direction are exactly the same will be load in the bearing cover, compression spring makes the bearing cover face all contact with the outer ring absolute hand rotating inner ring absolute sit in the position to ensure roller bearing outer ring and the bearing cover face contact absolutely, with a feeler gauge investigation, survey of 90 ° between bearing cap to block the space between the shoulder and housings, uniform calculation above survey values add 0.3 to 0.5 mm is the demand of multi-layer gasket thickness, used for extraction between bearing cover and the bearing seat on top of the bearing outer ring and the inner ring and the lubricating oil, the bottom of the outer ring stay within the bearing seat, coating on the rolling path with the hand a little lube oil bearing inner ring and outer ring back on within the bearing outer ring, before the installation of end cover, it is important to ensure the o-rings have placed end cover retaining shoulder end cover of military ranks and proper thickness of the gasket installed on the bearing seat, and to ensure that the outer ring to the top of the key and keyway, verify eventually end cover screws, all of the end cover screw twist to the specified torque.Heat resistant bearing steel M50 and installation