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Sankyo Oilless Industry
Bush Straight, Thin type:SOBU

Bush Straight, Thin type:SOBU

Product catalog summary

Overview: The document provides technical specifications and operational guidelines for RoHS-compliant Oilless Bushings, specifically the Bronze Straight Type SO#50SP2. These bushings are designed for use in various mechanical applications where lubrication is challenging or undesirable.

Specifications:

Material Composition: The bushings are made from bronze with embedded graphite (SP2) as a solid lubricant (GR-1).
Dimensions: Various sizes are available, with inner diameters (I.D.) and outer diameters (O.D.) specified in F7 and m6 tolerances, respectively.
Physical Properties: The bushings have a specific gravity of 7.9 g/cm³, hardness of 210 HB or more, elongation of 12% or more, tensile strength of 755 N/mm² or more, and a linear expansion coefficient of 1.9 x 10^-5/°C.

Operational Guidelines:

Lubrication: The bushings can operate without lubrication in atmospheric conditions, with a maximum allowable load of 100 N/mm² and sliding speed of 15 m/min. Regular lubrication with grease increases the allowable load to 30 N/mm² and sliding speed to 200 m/min.
Temperature Range: The operational temperature should not exceed 150°C.
Environmental Conditions: Suitable for use in atmospheric and fresh water environments under specified conditions.

Performance Characteristics:

Designed for high load and low-speed operations.
Available in various sizes, with custom production available for specific dimensions (e.g., dm150 and 160).

Installation and Tolerances:

Chamfering is required for proper installation.
Mating post tolerances are specified for different load conditions: d8 for general use with high load, e7 for light load, and f8 for high precision.

Catalog excerpts

OILLESS GUIDE BUSHINGS GUIDE BUSHINGS Oilless Bush　Bronze Straight Type (Mating Post) Applicable Washer Mating Post Tolerance d8:General use(high load) e7:General use(light load) f8:High precision Other Operating Conditions and Characteristics · Can be used in the atmosphere and fresh water (on condition). · Good performance in operation under high load and at low speed. Material Base Bronze with Graphite(SP2) Solid lubricant(GR-1) Operation temperature is 150˚C or less Order qOperation Range (SO#50SP2) Lubricant Type Lubricating Condition No lubrication Regular lubrication(Grease) Environment Condition Max. Allowable Sliding Speed V Max. Allowable PV value Operation Range Temperature 2 m/min N/mm Ym/min ˚C 15 Linear Expansion Coefficient ×10−5/˚C Metal Sliding Materials Bronze StraightYThin I.D. F7Y O.D. m6 Type Housing Inner Diameter Oilless Bush

Open the catalog to page 1

GUIDE BUSHINGS Oilless Bush Bronze Straight Y Thin I.D. F7 Y O.D. m6 Type Metal Sliding Materials Housing Inner Diameter qOperation Range (SO#50SP2) Lubricant Type Lubricating Condition No lubrication Regular lubrication(Grease) Environment Condition Max. Allowable Sliding Speed V Max. Allowable PV value Operation Range Temperature 2 ˚C m/min N/mm Ym/min qPhysical Properties (SO#50SP2) Specific Gravity 3 g/cm Linear Expansion Coefficient ×10−5/˚C

Open the catalog to page 2

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.

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