SFERAX

Carefully crafted in their workshops, Sferax linear ball bearings embody the robustness and precision required to meet the demands of the most demanding industrial applications. Whether in automation, manufacturing, robotics or other industrial fields, their wide range of linear bearings offers an exceptional choice of applications. Heavy loads, harsh environments, intensive cycles: they have a range of ball bushes designed to withstand the most varied conditions over a long period of time.

Application

This ball bearing has high manufacturing standards, as well as all the fundamental qualities to ensure very high precision linear movements, without any stroke limitation, without play and practically free of friction and wear.

Features

• Brass precision-milled ball tray (GBL)
• Smooth, jerk-free operation
• Noiseless

Application

This ball bearing has high manufacturing standards, as well as all the fundamental qualities to ensure very high precision linear movements, without any stroke limitation, without play and practically free of friction and wear.

Features

• Polyamide ball tray
• Smooth, jerk-free operation
• Noiseless

Application

This ball bearing has high manufacturing standards, as well as all the fundamental qualities to ensure very high precision linear movements, without any stroke limitation, without play and practically free of friction and wear.

Features

• Brass precision-milled ball tray (GBL)
• Smooth, jerk-free operation
• Noiseless

Application

The open ball bearing OUV provides very high precision linear movements, without stroke limitation, without play and practically free of friction and wear. The shaft can be supported all along its length.

Features

• Full metal
• High load carrying capacity
• Suitable for adjustable play, especially mounted in a plummer block SR-OUV-AL-R

Application

The ball bearing LR is an outstanding product of exceptional quality. It allows high precision rotating and linear movements, without stroke, limitation, without play and practically free of friction and wear.

Features

The ball tray rotates freely and is additionally guided by two rows of circular balls, which makes it run more smoothly.

Application

The linear ball bearing type LCR is designed for linear and rotary motions. The movements can be separate or simultaneous.

Features

•  Long working life
• Takes up little space
• Axial stoppage rings in polyamide

Application

This ball bearing is particularly suited for applications where space is limited, and high temperatures are used.

Features

• Full Metal
• Solid brass precision-milled ball tray
• Ball tracks run symmetrical with the load shaft and are positioned for a maximum load capacity.

Application

This model of ball bearing is particularly well-suited for applications where space is limited. Outstanding features include a full range of grades of precision and smooth, jerk-free operation.

Features

• Ball tracks run symmetrically with the load shaft (constant load)
• Incorporated seals are mounted inside the ball bearing (avoiding any change of length).

Application

This ball bearing is probably the strongest bearing ever created by SFERAX. In addition to standard use, it is ideally suited for constructions requiring high loads, as well as for environments requiring high temperatures.

Features

• Full Metal
• Ball tracks symmetrical to the load shaft, positioned for a maximal load

Application

The type HL has been developed to propose a linear bearing adapted to high loads and high radial torques. This makes it very appropriate for vertical applications. The three (external) grooves make the mounting to be easy and the high permissible temperatures make it perfectly suitable for example for injection moulds, vertical presses, peripheral machine devices, moulds industry, assembly industry and more.

Application

The type SL is a SFERAX innovation and a unique product on the market. It was designed for rational and cost-efficient applications, for which the main requirements are:

• Reduced mounting space
• High reliability
• Good precision
• Small weight in motion
• Low-cost, without any compromise on the SFERAX-Quality
• Simplified mounting (self-locking)

Features

The SL Series is assembled by shrink-on technique (self-locking), simplifying the mounting, eliminates glue, axial circlips or any other type of axial restraint. Assembly costs are therefore reduced. Also available in SLX version (housing in stainless steel and balls in Stainless Steel 1.4034).

Application

The type SLX is designed for rational and cost-efficient applications, for which the main requirements are:

• Good Corrosion Resitance
• Reduced mounting space
• High reliability
• Good precision
• Small weight in motion
• Low-cost, without any compromise on the SFERAX-Quality
• Simplified mounting (self-locking)

Features

The SLX Series is assembled by shrink-on technique (self-locking), simplifying the mounting and eliminates glue and axial circlips. Assembly costs are therefore reduced.

Application

Type SMX embodies everything that represents the “Swiss Made” label: quality, reliability, technological innovation and precision. It unites all the SFERAX know-how and offers a quality of construction that is incomparable on the market. It has unparalleled sturdiness, durability and reliability. This ball bearing is specially designed for miniature applications in industries such as:

• Clock- and Watchmaking
• Aeronautics
• Food-processing
• Medical & pharmaceutical

Features

• All-metal (stainless steel – brass)
• Housing in stainless steel 1.4112
• Solid brass precision-milled ball tray
• Balls in stainless steel 1.4034

Application

Type SMXX embodies everything that represents the “Swiss Made” label: quality, reliability, technological innovation and precision. It unites all the SFERAX know-how and offers a quality of construction that is incomparable on the market. It has unparalleled sturdiness, durability and reliability. This ball bearing is specially designed for miniature applications in industries such as:

• Clock- and Watchmaking
• Aeronautics
• Food-processing
• Medical & pharmaceutical

Features

• All-metal (stainless steel)
• Housing in stainless steel 1.4112
• Solid stainless steel 1.4112 precision-milled ball tray
• Balls in stainless steel 1.4034

Application

This ball bearing provides high precision linear movements, without stroke limitation, without play and practically free of friction and wear.

Features

Consists of a rigid housing produced from bearing steel 100 Cr6, hardened to 63 HRC, ground and lapped inside, (Grade B only ground). Solid brass precision-milled ball tray.

Application

The open ball bearing type OUV provides very high precision linear movements, without stroke limitation, without play and practically free of friction and wear. The shaft can be supported all along its length.

Features

• Full Metal
• High load carrying capacity due to optimal location of the ball tracks.

Application

This linear unit consists of a housing/ball bearing RSF and a shaft ASF. It is different from the other SFERAX-systems. The RSF is a super compact rectangular ball bearing. Its guiding slide ASF also serves as support thanks to its ground flat surface, and can be fixed directly with blind threaded holes (ASF-M) or counterbored through holes (ASF-V).

Through its great rigidity, this unit can be used in various engineering design situations as well as in the machine tool industry. High load carrying capacity, minimal space requirement, good heat resistance are further advantages.

Order Example
2 RSF 12, Quality B with Seals 1 Shaft ASF-M, 600 mm long.

Application

This ball bearing has high manufacturing standards, as well as all the fundamental qualities to ensure very high precision linear movements, without any stroke limitation, without play and practically free of friction and wear.

Features

Protected by brass rings (MS 60 PB DIN 17660) for use under special conditions.

For temperatures up to 140° C. Also in environments hostile to plastic.

Application

The BIMO ball bearing enables high-precision linear and rotating movement while allowing for a certain degree of play due to the operation of the needle bearing (mainly for large diameters).

Recommendations

The BIMO ball bearing design keeps it away from any axial shaft load, since the latter causes friction between the needle bearing cage and the circlip. High rotation speeds require constant lubrication of the BIMO (see the groove with holes for this purpose), since the lubricant serves to reduce friction and heat. Moreover, high axial acceleration combined with rotation are working conditions that require very special attention. In case of axial loads or special requirements, please contact us for an alternative. In any case, it is necessary to test the linear set in real working conditions before validating the project design.

Application

The ball bearing LRX is an outstanding product of exceptional quality. It allows high precision rotating and linear movements, without stroke, limitation, without play and practically free of friction and wear.

Features

• The ball tray rotates freely and is additionally guided by two rows of circular balls, which makes it run more smoothly.
• Housing in stainless steel 1.4112
• Solid brass precision-milled ball tray
• Balls in stainless steel 1.4034

Application

The ball bearing LRXX is an outstanding product of exceptional quality. It allows high precision rotating and linear movements, without stroke, limitation, without play and practically free of friction and wear.

Features

• The ball tray rotates freely and is additionally guided by two rows of circular balls, which makes it run more smoothly.
• Housing in stainless steel 1.4112
• Solid stainless steel 1.4112 precision-milled ball tray
• Balls in stainless steel 1.4034

Application

The linear ball bearing type LCRX is designed for linear and rotary motions. The movements can be separate or simultaneous.

Features

• Long working life
• Takes up little space.
• Axial stoppage rings in polyamide.
• Housing in stainless steel 1.4112
• Solid brass precision-milled ball tray
• Balls in stainless steel 1.4034

Application

The linear ball bearing type LCRXX is designed for linear and rotary motions. The movements can be separate or simultaneous.

Features

• Long working life
• Takes up little space.
• Axial stoppage rings in stainless steel 1.4112
• All metal (stainless steel)
• Housing in stainless steel 1.4112
• Solid stainless steel 1.4112 precision-milled ball tray
• Balls in stainless steel 1.4034

Application

The ES is designed to facilitate the use of the linear ball bearing. The obtainable stroke depends on the allowed deflection of the shafts with respect to their length, to their diameter and to the  considered load, as well as the relative position of the elements composing on it.It can be used with mobile shafts (according to drawings), or with fixed ones. These elements are manufactured for shafts with a diameter from 6 to 80 mm.

Design

The ball-bearing supports and shaft supports are made of grey cast iron, ground on all sides.

Precision

The distance between the shafts is constant within 5 μ m. The parallelism between the fixing bases and the shafts is guaranteed to 10 μ m, according to the quality of the chosen shafts and ball bearings.

Application

The standard ball-bearing table type ES-1 allows almost the same applications as the type ES.

Features

• The 4 ball bearings are assembled on a single support.
• The longitudinal distance between the SFERAX is not adjustable.
• Assembly is easier.
• Slightly higher precision.

Application

The coordinated standard ballbearing table is designed to allow 2 crossed movements at 90°. It is based on the same principle as the ES-1; the ballbearing support has two times 2 borings for the ball bearings.

Design

The ball-bearing support and the 4 shaft supports are made of grey cast iron, ground on all sides.

Precision

The distance between the shafts is constant within 5 µm. The parallelism between the fixing bases and the shafts is within 10 µm, depending on the quality of the chosen shafts and ball bearings. Perpendicularity is 10 µm per 100 mm.

Application

In principle, this element serves as a complement to the SA-AL. It simplifies the use of SFERAX ball bearings.

Construction

The ball-bearing plummer block is made of aluminium. The standard model is delivered fully assembled with 1 or 2 SFERAX SL ball bearings and 2 seals.

Feature

Can be regreased (incorporated lubricator).

SFERAX has a highly qualified and experienced department specially dedicated to the production of high precision shafts. It adapts flexibly to the most diverse requirements, and its engineering office has all the needed skills to support you in your designs.

• Surface-hardened shafts
• SFERAX standard -> Manufactured in quality class I-III & IIIR
• SFERAX in inch -> Manufactured in quality class I-III & IIIR
• SFERAX Tube -> Manufactured in quality class I-III & IIIR
• SFERAX INOX -> Manufactured in quality class I-III & IIIR
• SFERAX Chromed 5 à 10 µm -> Manufactured in quality class III – h7