摘要:
An object is to provide a peel tester that continuously detects the characteristics of an adhesive tape from the moment an impact is applied to an adherend until the adherend is peeled, and a new method for evaluating the impact peel characteristics of an adhesive tape, which enables quantitative evaluation for the impact peel characteristics by using the test result obtained by the peel tester. Provided is a peel tester 1 with a main body 2, to which an adherend I is to be adhered via an adhesive tape III, for performing a peel test by an impact applied to the adherend I, which includes: a load detection device 6 that detects change in load applied to the adhesive tape I until the adherend I is peeled off from the main body 2; and a displacement detection device 7 that detects change in moving distance of the adherend I until the adherend I is peeled off from the main body 2.
摘要:
An object is to provide a peel tester that continuously detects the characteristics of an adhesive tape from the moment an impact is applied to an adherend until the adherend is peeled, and a new method for evaluating the impact peel characteristics of an adhesive tape, which enables quantitative evaluation for the impact peel characteristics by using the test result obtained by the peel tester. Provided is a peel tester 1 with a main body 2, to which an adherend I is to be adhered via an adhesive tape III, for performing a peel test by an impact applied to the adherend I, which includes: a load detection device 6 that detects change in load applied to the adhesive tape I until the adherend I is peeled off from the main body 2; and a displacement detection device 7 that detects change in moving distance of the adherend I until the adherend I is peeled off from the main body 2.
摘要:
A coreless seal 11 for being assembled in a shell-type roller bearing provided in a shell-type roller bearing comprises an elastic annular member 12. An outer diameter B of the coreless seal 11 for being assembled in the shell-type roller bearing is a dimension provided by adding interference 2A for an amount of thermal shrinkage to an inner diameter C of a shell-type outer ring. Since the annular member 12 shrinks in a direction shown by an arrow W at low temperature, the outer diameter of the coreless seal 11 for being assembled in the shell-type roller bearing is reduced from B to B′. However, since the outer diameter B is provided with the dimension A obtained by adding interference for an amount of thermal shrinkage, the coreless seal 11 for being assembled in the shell-type roller bearing has interference A′ in its outer diameter B′ even after the shrinkage.
摘要:
To provide a roller bearing assembly that can provide a high load bearing capacity and in which the strength of roller retainers can be increased, the roller bearing assembly includes inner and outer roller retainers (13, 23) each having a plurality of circumferentially arranged pockets (4), and a circular row of rollers (2) received in part within the pockets in the inner roller (13) and in part within the pockets in the outer roller (23). The inner roller retainer (13) has pillars (5) each left between the neighboring pockets to retain the circular row of the rollers from radially inwardly and having an outer diameter smaller than the diameter of the pitch circle PCD of the circular row of the rollers. The outer roller retainer (23) has pillars (5) each left between the neighboring pockets to retain the circular row of the rollers from radially outwardly and having an inner diameter greater than the pitch circle diameter PCD. One of the outer and inner roller retainers is made of a metallic material while the other thereof is made of a resinous material.
摘要:
A coreless seal arranged between a rotation shaft and an outer member has an inner diameter surface opposed to an outer diameter surface of the rotation shaft with a space for preventing leakage of fluid. The outer member has a flange bent inwardly. The coreless seal has an outer diameter and an inner diameter that are dimensions obtained by adding interference for an amount of thermal shrinkage as a whole dimension.
摘要:
A drawn cup needle roller bearing comprises a drawn cup having flanges formed by a bending process at both ends, rollers arranged along the inner diameter surface of the drawn cup, and a no-metal cored seal incorporated on the inner diameter side of the drawn cup. The drawn cup in which the rollers are incorporated is heat treated and the no-metal cored seal is elastically deformed and incorporated inside the drawn cup past the flange. Here, the roller has a nitrogen-enriched layer on its surface layer, and the nitrogen-enriched layer contains not less than 20% by volume of retained austenite.
摘要:
A pressure-sensitive adhesive type optical film which comprises an optical film and a pressure-sensitive adhesive layer superposed on at least one side thereof through an anchor layer formed from a polyamine compound. It is easy to handle because the pressure-sensitive adhesive does not peel off even when an edge of the film comes into contract during handling in use. The pressure-sensitive adhesive type optical film can be inhibited from being electrostatically charged upon peeling.
摘要:
A drawn cup needle roller bearing comprises a drawn cup having flanges formed by a bending process at both ends, rollers arranged along the inner diameter surface of the drawn cup, and a no-metal cored seal incorporated on the inner diameter side of the drawn cup. The drawn cup in which the rollers are incorporated is heat treated and the no-metal cored seal is elastically deformed and incorporated inside the drawn cup past the flange. Here, the roller has a nitrogen-enriched layer on its surface layer, and the nitrogen-enriched layer contains not less than 20% by volume of retained austenite.
摘要:
To provide a roller bearing assembly that can provide a high load bearing capacity and in which the strength of roller retainers can be increased, the roller bearing assembly includes inner and outer roller retainers (13, 23) each having a plurality of circumferentially arranged pockets (4), and a circular row of rollers (2) received in part within the pockets in the inner roller (13) and in part within the pockets in the outer roller (23). The inner roller retainer (13) has pillars (5) each left between the neighboring pockets to retain the circular row of the rollers from radially inwardly and having an outer diameter smaller than the diameter of the pitch circle PCD of the circular row of the rollers. The outer roller retainer (23) has pillars (5) each left between the neighboring pockets to retain the circular row of the rollers from radially outwardly and having an inner diameter greater than the pitch circle diameter PCD. One of the outer and inner roller retainers is made of a metallic material while the other thereof is made of a resinous material.
摘要:
There is provided a roller bearing utilizing a roller retainer, which has an excellent assemblability in the sense that the assembly line can be automated and which eliminates various problems inherent in the full complement roller bearing The roller bearing includes an outer race (1) having a raceway, a plurality of rollers (2) held in rolling contact with the raceway, and a ring-shaped roller retainer (3) having a plurality of pockets (4), each rollingly receiving the respective roller (2), spacedly defined therein in a direction circumferentially thereof to form a ladder-like structure. The roller retainer (3) has a plurality of slits (7, 7A) that are spacedly defined in a direction circumferential thereof so as to extend from one axial end or the other axial end of the roller retainer (3) to a position adjacent the other axial end or one axial end.