Classification of spherical roller bearing and spherical roller bearing use and installation - bearing knowledge

Spherical roller bearings are divided into: cylindrical inner hole and cone inner hole. Cone inner hole of rear taper 1:12 respectively, code-named K of spherical roller bearing, Type 153000 or 113000) Rear and 1:30, code-named K30 spherical roller bearing. This kind of bearing with conical shaft timing, inner ring moving along the axial radial clearance of the bearing can be adjusted. To the rear, code-named K, K30 taper hole spherical roller bearings, installed on the suitable set set, became the post code for K + H and K30 + H the bearing. These bearings can be installed in the absence of shoulder axis, applicable to the often need to install and remove the bearings. In order to improve the lubrication performance of bearing, the bearing outer ring car have the annular groove and uniform distribution of three oil hole is drilled, then buy code-named W33. The main applicable cage: stamping steel reinforced cage, The suffix E, the domestic few) 。 Stamping steel plate type cage ( The suffix CC) Cage, glass fiber enhanced polyamide 66 ( The suffix TVPB) And machined brass plate cage ( The suffix MB) 。 A bracket will be machined brass one-piece ( The suffix CA) , vibration occasions stamping steel cage, The suffix JPA) 。 Brass cage (vibration occasions The suffix EMA) 。 On the same structure, bearing code or have different. Main use: papermaking machinery, speed reducer, railway vehicle axle, gear box bearing, rolling mill rolling mill rolls, crusher, vibrating screen, printing machinery, woodworking machinery, all kinds of industrial reducer, vertical arrange ushering self-aligning bearing. Spherical roller bearing with two race between inner ring and groove for spherical outer ring, equipped with cylindrical roller bearing. On the surface of the outer ring raceway curvature center and bearing center consistent, so with automatic self-aligning ball bearing the same tone heart function. In there was a deflection axis, a hood, can automatically adjust load and two direction axial load. Large radial load capacity, suitable for heavy load and impact load. Inner circle diameter is tapered bore the bearing, it can be installed directly. Or the use of set cover, remove the cylinder installed on the cylinder axis. Keep rack stamping steel cage, polyamide forming keep frame and copper alloy car cage. For the self-aligning bearing, the shaft bearing load case shaft hole, using middle ring installation can prevent the outer ring tilt and rotate. Should keep in mind that some of the size of the self-aligning ball bearing of ball protrudes from the side of the bearing, so the middle ring should be recessed installation, in case of damage to the ball. A large number of bearings are generally use mechanical or hydraulic pressure into the method for installation. Type for the separable bearings, inner ring and outer ring can be installed separately, thus simplify the installation process, especially when the inside and outside the circle must be especially interference fit. In the inner ring has been installed in place of the axial load including outer ring of bearing box, must pay attention to see if inside and outside the circle to the right, in order to avoid scratch bearing raceway and rolling parts. If a cylinder and needle bearing with without the inner ring or side of the flange rim flange edge of the inner ring, it is recommended to use to install the sleeve. Outside diameter should be equal to the inner ring raceway diameter of sleeve F, machining tolerance standards should be d10. Drawn cup needle roller bearing is best to use the core shaft installation. For the installation of spherical roller bearing axial clearance, available on the journal of adjusting nut, adjusting shim and bearing hole of the thread, or use the methods of preloaded spring to adjust. Axial clearance size, the layout of the bearing installation and, the distance between bearings, shaft and bearing material, can be determined according to the working conditions. For high load high speed of spherical roller bearing, adjust clearance, must consider the effect of temperature on the axial clearance, clearance reduction is estimated, will cause the temperature rise, that is to say, the axial clearance to properly adjust a bit bigger. For low speed and vibration of the bearing, no clearance should be taken to install, exerted load or the installation. Its purpose is to make the spherical roller bearing roller and raceway produce good contact, uniform distribution load, to prevent damaged roller and raceway is impacted by the vibration. After adjustment, the axial clearance with the size of the dial gauge test. Method is first will dial gauge fixed on the fuselage or bearing seat, smooth surface of the dial gauge contact to resist axis, around along the axial shaft, whose hands of throwing is the largest axial clearance value.