Our total annual production capacity is about 100,000 tons of dense-shaped refractory product and 100,000 tons of monolithic refractory product. We have three tunnel kilns for silicon-aluminum dense bricks and one new plant for the monolithic refractory. We're sure our custom-made products and professional services will bring you a stable quality supply and more profit.

genie gr-26j

[Remark]The above equations are applicable when the shaft and housing are steel.When other materials are used, JTEKT should be consulted.

Genie GR-20

When a radial load is applied, the inner ring will expand slightly. Since this expansion enlarges the circumference of the bore minutely, the initial interference is reduced. The reduction can be calculated by the following equations :

A bearing generally has an operating temperature, higher than the ambient temperature. When the inner ring operates under load, its temperature generally becomes higher than that of the shaft and the effective interference decreases due to the greater thermal expansion of the inner ring. If the assumed temperature difference between the bearing inside and surrounding housing is Δt , the temperature difference at the fitting surfaces of the inner ring and shaft will be approximately (0.10 to 0.15) × Δt. The reduction of interference (Δdt) due to temperature difference is then expressed as follows :

genie gr-26j manual

GENIE GR26J for sale

Load characteristics are classified into three types : rotating inner ring load; rotating outer ring load and indeterminate direction load. Table 9-1 tabulates the relationship between these characteristics and fit.

genie gr-26j specs pdf

Refractory Bricks, Monolithic Refractory, Insulation Refractory, Bauxite, Ceramic Fiber Blanket, Silica Sand, Magnesia Bricks, Silica Bricks, High Alumina Bricks, Fireclay Bricks

In selecting the proper fit, careful consideration should be given to bearing operating conditions.Major specific considerations are :

The effective interference obtained after fitting differs from calculated interference due to plastic deformation of the ring fitting surface. When the inner ring is fitted, the effective interference, subject to the effect of the fitting surface finish, can be approximated by the following equations :

Genie GR26J battery

In view of these considerations, the following paragraphs explain the details of the important factors in fit selection.

When a high degree of accuracy is required, the tolerance of the shaft and housing must be improved. Since the housing is generally less easy to machine precisely than the shaft, it is advisable to use a clearance fit on the outer ring. With hollow shafts or thin section housings, greater than normal interference is needed. With split housings, on the other hand, smaller interference with outer ring is needed. When the housing is made of aluminum or other light metal alloy, relatively greater than normal interference is needed. In such a case, consult with JTEKT.

Genie gr26j specs

Insulating Fire Bricks are a special type of brick that handles high temperatures and as insulation function, which is mainly used in fireplaces, fireboxes, furnaces, and kilnsInsulating Brick: GR23 grade

Consequently, when the radial load, exceeds the C0 value by more than 25 %, greater interference is needed. Much greater interference is needed, when impact loads are expected.

Consequently, when a bearing is higher in temperature than the shaft, greater interference is required. However, a difference in temperature or in the coefficient of expansion may sometimes increase the interference between outer ring and housing. Therefore, when clearance is provided to accommodate shaft thermal expansion, care should be taken.

When a bearing is fitted with interference, the bearing ring will expand or contract, generating internal stress. Should this stress be excessive, the bearing ring may fracture. The maximum bearing fitting-generated stress is determined by the equation in Table 9-2. In general, to avoid fracture, it is best to adjust the maximum interference to less than 1/1 000 of the shaft diameter, or the maximum stress (σ), determined by the equation in Table 9-2, should be less than 120MPa.