EASE SEIKO CO., LTD.

The EASE linear ball bearings are high precision bearings
manufactured with its own technology and have the following
features.

1	The EASE linear ball bearing has outer race that is processed by cold press forming to shape the ball tracks. This gives features to its appearance,too.
2	The cold press forming has enabled lightweight structure of the bearing.This eventually provides compact and lightweight machine design.
3	The balls circulate endlessly.This structure provides unlimited stroke with minimal frictional resistance that ensures long service life and energy saving.
4	The frictional resistance remains almost unchanged,even when the load increases.Therefore,heavy load is acceptable depending on application conditions.
5	Because of the cold press forming for the outer race,an early failure caused by moment load and excessive pre-load can be prevented.
6	The EASE linear ball bealing is heat treated in such a method as to suit to the outer race that is cold press formed.
7	The EASE linear ball bearing with steel retainer is resistant against high temperature and applicable upto 150°C when it is without seals.Please consuite EASE on use outside the recomended temperature range.
8	The EASE linear ball bearing is interchangeable.The eccentricity is small and centering is easy.It can operate with simple lubrication or without any lubrication.depending on applications. Thus maintenance is almost free.




		As illustrated below,the EASE linear ball bearing is consisted of an outer race,retainer,balls and end rings.The retainer is incorporated inside the outer race,and has three or more rows of elliptical ball tracks that allow unlimitede ball circulation and the balls circulate very smoothly in those ball tracks. The retainer is held by two end rings at both ends of the outer race. One side of theparalleled straight portions of the elliptical ball track is cut off open,and the balls there are in contact with the shaft surface to circulate to and fro unlimitedly in the ball track according to the rectilinear reciprocation of the shaft.Thus the retainer forms rolling tracks,and at the same time keeps the balls from falling out when the bearing is removed from the shaft.

	Standard type	Adjustable type	Open type

	This is the most widely used type with three different dimension series as below. For normal applications, High-grade(H) is available. Precision-grade(P) is also available for high precision applications. ※Dustproof, sealed retainers available.	The outer race has a slot in axial direction. This design allows an easy clearance adjustment with the shaft together with a housing which has adjustable inside dimeter. The basic dimensions are the same as of the respective series of standard type. This type is described with the suffix "AJ" as below. ※Dustproof, sealed retainers available.	The outer race is cut off open by one ball track (50°to 80°). This opening slot allows an application for a shaft with supports to prevent its deflection. Clearance can also be adjusted easily. This type is described with the suffix "OP" as below. ※Dustproof, sealed retainers available.
	Original series of EASE in metric dimension. Most widely used in Japan
	SDM （Steel Retainer） Size Table	SDM AJ （Steel Retainer） Size Table	SDM OP （Steel Retainer） Size Table
	SDM-Y （Plastic Retainer） Size Table	SDM-Y AJ (Plastic Retainer) Size Table	SDM OP （Steel Retainer） Size Table
	Most widely used series in Europe in metric dimension
	SDE （Steel Retainer） Size Table	SDE AJ （Steel Retainer） Size Table	SDE OP （Steel Retainer） Size Table
	SDE-Y （Plastic Retainer） Size Table	SDE-Y AJ (Plastic Retainer) Size Table	SDE OP （Steel Retainer） Size Table
	Most widely used series in USA in inch dimension
	SDB （Steel Retainer） Size Table	SDB AJ （Steel Retainer） Size Table	SDB OP （Steel Retainer） Size Table

	Round Flanged type	Square Flanged type

	A round mounting flange is equipped on one end of the standard type bearing as part of the outer race. This design can shorten mounting time,offers compact machine design and provides high cost efficiency.This type is described as below.	This type is equipped with a mounting flange which has been made square from the round flange of SDMF type by cutting off its edges on four sides. This design can lower the mounting center height and enables light and compact machine design. This type is described as below.
	SDMF （Steel Retainer） Size Table	SDMK （Steel Retainer） Size Table
	SDMF-Y （Plastic Retainer） Size Table	SDMK-Y （Plastic Retainer） Size Table

	Long type	Long type with Round Flange	Long type with Square Flange

	Two ball retainers of a standard type bearing are incorporated in this type. Therefore,it can carry large load as well as moment load. Suffix"L" indicates Long type,as below.	This has the combination of a long type bearing and a round mounting flange. This provides easy mounting and can carry moment load. This type is described as below.	This has the combination of a long type bearing and a square mounting flange. This provides lower center height for mounting,light and compact machine design and can carry moment load. This type is descrived as below.
	SDM-LY （Standard） Size Table	SDMF-LY (Standard) Size Table	SDMK-LY (Standard) Size Table


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