SLIDE BUSH STRUCTURE AND ADVANTAGES・ TYPES・ ・・・・・・・・・・・・・・・・・・・・・・・・・・・ BLOCK SERIES・・・・・・・・・・・・・・・・・・・・ SPECIFICATIONS・・・・・・・・・・・・・・・・・・ LIFE CALCULATION・ ・・・・・・・・・・・・・・ LOAD RATING FOR OPEN TYPE SLIDE BUSH・ MOUNTING・・・・・・・・・・・・・・・・・・・・・・・・ LUBRICATION・・・・・・・・・・・・・・・・・・・・・ DUST PREVENTION・・・・・・・・・・・・・・・ COUNTERMEASURE FOR DUST PREVENTION・ FIT SERIES・ ・・・・・・・・・・・・

SLIDE BUSH SLIDE BUSH Figure C-2 Basic Structure of NB Slide Bush (GM) The NB slide bush is a linear motion mechanism utilizing the rotational motion of ball elements. Since linear motion is obtained using a simple mechanism, the slide bush can be used in a wide variety of applications, including transportation equipment, food processing equipment, and semiconductor manufacturing equipment. STRUCTURE AND ADVANTAGES Low Friction The outer cylinder of slide bush contains a ball retainer that is perfectly designed to control the circulation of ball elements, resulting in smooth linear motion. The...

SLIDE BUSH Table C-3 Type (3) type SMST SMSF-E long flange type ※ Outer cylinder is treated with electroless nickel plating triple-wide pilot end flange type SMF-W KBF-W SWF-W SMK-W KBK-W SWK-W SMSF-W KBSF-W SWSF-W SMSK-W KBSK-W SWSK-W SMSKC KBSKC ※ Outer cylinder is treated with electroless nickel plating flange type with pilot end double-wide pilot end flange type ※ Outer cylinder is treated with electroless nickel plating Grease fitting is standard double flange type with pilot end Grease fitting is standard Table C-4 Type (4) GM Series type GM/GW single type SMF-W-E SMSF-W-E C- 50 SMK-W-E...

SLIDE BUSH BLOCK SERIES This type is the most commonly used standard type. The housing is made of aluminum alloy. The wide (W) type is also available for SMA and AK types. The housing has a self-aligning feature. This feature will absorb inaccuracy of the installation base so that a smooth movement is expected. SME・SMD・SWD Type Clearance-adjustment is achieved by creating a slit on the SMA/SWA type housing. Less clearance between block and shaft results in higher positioning accuracy by tightening the adjustment screw. Open type housing allows a support from below so that a deflection of the...

SLIDE BUSH LOAD RATING FOR OPEN TYPE SLIDE BUSH For the open type slide bush an opening is provided to allow the shaft to be supported from underneath. In case a load is constantly applied in the direction of the opening (for example, being used with a vertical shaft or an overhang loading is applied), the load rating decreases due to less number of loaded rows of ball elements (Table C-8). Therefore, the load rating must be calibrated at the time of design based on the direction of the loading. Figure C-4 Clearance Adjustable Type Figure C-5 Open Type Figure C-6 Flange Type loading from below...

SLIDE BUSH LUBRICATION COUNTERMEASURE FOR DUST PREVENTION It is important to lubricate the slide bush for an accurate operation and for a long life. Anti-rust oil is applied to NB slide bush prior to shipment. The NB selected anti-rust oil has a little effect on the lubricant, however, please apply lubricant after cleaning the slide bush by, for example, kerosene, etc. Grease Lubricant Figure C-7 Grease Fitting Prior to usage, please apply grease, then re-lubricate periodically according to the operating conditions. (Lithium soap-based grease is recommended.) Relubrication can be done by directly...

SLIDE BUSH SURFACE TREATMENT AND ANTIRUST EFFECT In order to adapt various kinds of environment, NB provides flange bushs with surface treatment as a standard. Table C-12　Surface Treatment anti-rust effect electroless nickel plating part number surface treatment low temperature black chrome treatment with floride coating black oxide (excluding anti-corrosion type) industrial chrome plating High-carbon chromium bearing steel ( without surface treatment) Martensite stainless steel (without surface treatment) ： excellent　◎ highly effective　○ effective　△ mildly effective ： ： ： ※1：Please note that...

SLIDE BUSH － Standard Type － part number structure example SMS 25 G UU - P specification SM: standard SMS: anti-corrosion inner contact diameter (dr) retainer material blank: standard/steel 　　　 anti-corrosion/stainless steel G: resin SLIDE BUSH accuracy grade blank: high P: precision seal blank: without seal U: seal on one side UU: seals on both sides Z: doublelip-seal on one side ZZ: doublelip-seals on both sides Doublelip-seal is available for size 6 to 30. part number steel retainer resin retainer SM 3 SM 4 SM 5 SM 6 SM 8s SM 8 SM 10 SM 12 SM 13 SM 16 SM 20 SM 25 SM 30 SM 35 SM 40 SM 50 SM...

SLIDE BUSH SM-AJ TYPE － Clearance Adjustable Type － part number structure example SMS 25 G UU - AJ inner contact diameter (dr) retainer material blank: standard/steel 　　　 anti-corrosion/stainless steel G: resin part number SLIDE BUSH specification SM: standard SMS: anti-corrosion seal blank: without seal U: seal on one side UU: seals on both sides * Accuracy is measured prior to machining clearance slit. shaft diameter

SLIDE BUSH SM-OP TYPE － Open Type － part number structure example SMS 25 G UU - OP open type inner contact diameter (dr) retainer material blank: standard/steel 　　　 anti-corrosion/stainless steel G: resin part number steel retainer resin retainer − SM 12-OP SM 13-OP SM 16-OP SM 20-OP SM 25-OP SM 30-OP SM 35-OP SM 40-OP SM 50-OP SM 60-OP SM 80-OP SM100-OP SM120-OP SM150-OP SLIDE BUSH specification SM: standard SMS: anti-corrosion seal blank: without seal U: seal on one side UU: seals on both sides * Accuracy is measured prior to machining open slit.

SLIDE BUSH SM-G-L TYPE － Long Type － part number structure example SM 25 G - L UU long type inner contact diameter (dr) SLIDE BUSH seal UU: seals on both sides ZZ: doublelip-seals on both sides resin retainer shaft diameter allowable static moment

SLIDE BUSH － Double-Wide Type － part number structure example SMS 25 G W UU inner contact diameter (dr) seal blank: without seal UU: seals on both sides ZZ: doublelip-seals on both sides retainer material blank: standard/steel 　　　 anti-corrosion/stainless steel G: resin SLIDE BUSH specification SM: standard SMS: anti-corrosion double-wide type Doublelip-seal is available for size 6 to 30. part number allowable static moment