Since the inception of the company in 1948, the company has grown in strength, building and maintaining outstanding long-lasting relationships with numerous blue-chip companies that are based on trust.

Some blue chip companies that Krost has supplied and built relationships with are:

• Daimler Chrysler
• South African Airways
• Scania
• Telkom
• Bell Equipment
• Sharp Electronics

Krost Shelving Company prides itself in its professionalism by supplying numerous companies and businesses both in SA and the surrounding countries with racking and shelving, making full use and maximising space, designing shelving to suit all individual storage needs.

This professional shelving and racking company has a staff complement of 170, with the team being encouraged to offer personal attention. The computer aided design will design excellent shelving systems that will individually suit your establishment.

Krost offers excellent quality steel shelving which is simple and easy to assemble. During installation no valuable time is lost during the process, which equals no lost revenue.

Krost Shelving Company supplies

• Boltless light-weight steel shelving
• Boltless medium-weight shelving

• Boltless heavy-weight shelving
• Bolted steel shelves
• Mezzanine floors
• Rivet shelving
• Gondola shelves
• Lockers

The Krost Shelving Company is your perfect solution to shelving and racking in and around SA; if it is shelving and racking you need, then you have certainly found the answer to your shelving problems

Control of worker exposure by ventilation fans or other means is required by WISHA occupational health regulations under the following three conditions:

1.            When levels of airborne contaminants (chemicals, dusts, vapors, fumes) are hazardous, such as above their permissible exposure limits

2.            When the lower explosive limit of flammable vapors is exceeded,

3.            When the oxygen level drops below 19.5 % in the air.

There are three types of workplace ventilation:

A.            Fans used in indoor air quality ventilation used primarily to provide fresh, heated or cooled air to buildings as part of the heating, ventilating and air-conditioning system

B.            Dilution ventilation which dilutes contaminated air in a whole building or room by blowing in clean air with fans and exhausting some dirty air and is usually accomplished with the use of large exhaust fans in the walls or roof of the building

C.            Local exhaust ventilation which captures contaminating emissions at or very near the source through the use of extraction fans. It is needed when employees are exposed to high toxicity chemicals, when large amounts of dusts or welding fumes are generated, or when increased heating costs from ventilation in cold weather are a concern.

Air Cleaners

Air cleaning devices on ventilation systems are sometimes necessary to capture large amounts of dust. In some instances, they may be required by air pollution regulations. The type of air cleaner depends on the type of contaminant being removed, its concentration in the air, the amount of contaminant that must be removed

Fans

Fans are the workhorses of exhaust ventilation systems. They must be the appropriate size and type to make the ventilation system work effectively. They must provide enough air pressure difference (“suction”) to capture contaminants at the source, draw them through the hood, carry them through the ducting and exhaust them outdoors.

hese are some of the new machine tools being manufactured worldwide: Metal Cutting Tools (Boring & Drilling Machines); Gear Cutting Machines; Grinding, Honing, Lapping, Polishing, and Buffing Machines; Lathes; Milling Machines; Machining Centers; Station Type Machines; Metal Forming Tools (Punching & Shearing Machines); Bending & Forming Machines; Metal Working Presses; and Miscellaneous Tools, and Special Machine Tools (Water Jet Machines; Laser Machines; Electro Chemical Machines; Electrical Discharge Machines; and Coordinate Measuring Machines).

Single door lockers have a variety of applications which include schools, gyms, clubs, offices, sports institutions, factories and businesses, to mention some of the many uses.
For more on lockers, single door lockers and double door lockers, you have come to the right place; simply contact us for more information.

WHAT ARE BEARINGS

Common motions permitted by bearings are:

·                    Axial rotation e.g. shaft rotation

·                    Linear motion e.g. drawer

·                    spherical rotation e.g. ball and socket joint

·                    hinge motion e.g. door, elbow, knee

Reducing friction in bearings is important to reduce wear and to facilitate extended use at high speeds and also to avoid overheating. A bearing can

reduce friction by virtue of its shape, material component (plastics that have low surface friction) or by introducing a fluid or electromagnetic field between surfaces.

Speeds

Plain bearings only handle lower speeds, rolling element bearings are faster, followed by fluid bearings and finally magnetic bearings which are limited by centripetal force overcoming material strength.

WHERE TO BUY BEARINGS

SKF claim that – with their products – you will have increased productivity, fewer unplanned stops, increased uptime and improved processes. These are some of their ranges they have on offer:

• Ball Bearings


• Roller Bearings


• Super Precision Bearings


• Miniature Bearings


• Bearing Units


• Plummer Blocks and Sleeves


• Steel Balls and Rollers

• Needle Bearings Linear Way Systems


• Ball Screws


• Rod Ends and Spherical Plain Bearings


• Slewing Rings


• Split Roller Bearings


• Oils and Greases


• Lubrication Systems


• Bearing Pullers and Heaters


• Wheel bearings

Plain bearings use surfaces in rubbing contact, often with a lubricant such as oil or graphite. A plain bearing may or may not be a discrete device. It may be nothing more than the bearing surface of a hole with a shaft passing through it, or of a planar surface that bears another (in these cases, not a discrete device); or it may be a layer of bearing metal either fused to the substrate (semi-discrete) or in the form of a separable sleeve (discrete). With suitable lubrication, plain bearings often give entirely acceptable accuracy, life, and friction at minimal cost. Therefore, they are very widely used.

However, there are many applications where a more suitable bearing can improve efficiency, accuracy, service intervals, reliability, speed of operation, size, weight, and costs of purchasing and operating machinery.

Thus, there are many types of bearings, with varying shape, material, lubrication, principle of operation, and so on. For example, rolling-element bearings use spheres or drums rolling between the parts to reduce friction; reduced friction allows tighter tolerances and thus higher precision than a plain bearing, and reduced wear extends the time over which the machine stays accurate. Plain bearings are commonly made of varying types of metal or plastic depending on the load, how corrosive or dirty the environment is, and so on. In addition, bearing friction and life may be altered dramatically by the type and application of lubricants. For example, a lubricant may improve bearing friction and life, but for food processing a bearing may be lubricated by an inferior food-safe lubricant to avoid food contamination; in other situations a bearing may be run without lubricant because continuous lubrication is not feasible, and lubricants attract dirt that damages the bearings.