Ball Bearings - Mini Series

ball-bearings

 

 

 

Steinels ball-bearings are distinguished by exceptional precision and friction free movement. Therefore they find a wide acceptance as a construction element for electrical and optical measuring instruments and systems they will be used successfully in machines, instruments and technical equipment of high precision.

 

 

 

Pillar Bushing Ball Cage

Pillar

Size range:
Diameters from 3 mm to 10 mm
Length from 30 mm to 160 mm

Bushing

Size range:
Internal diameter from 5 mm to 13 mm
External diameter from 7 mm to 19 mm
Length from 10 mm to 40 mm

Ball Cage

Size range:
Internal diameter from 3 mm to 10 mm
External diameter from 5 mm to 13 mm
Length from 10 mm to 40 mm


 



Steinel Guide pillars are ground on all sides. The guide diameter is super-fine ground finish and lapped to tolerance ISO h3. Roundness and cylindrically within ISO h1. Mount into mounting holes ISO P6.

Steinel Guide bushes are ground on all sides. The guide diameter(bore) is super-fine honed and will be matched with the pillar to ensure an optimal preload. Roundness and cylindrically within ISO h1.

The Steinel Ball cages will be assembled absolutely tensionfree and are freely movable. The careful production and control guarantee an exceedingly friction free axial and radial movement

 

Guide Pillars

Inside Steinel's range of products we can find an extensive range of guide pillars.

Made of steel 1.1221 (CK60) with hardness 62-64 HRC. Their diameter is standard ISO h3.



These are some of our Pillars:

  

Precision ground for press fitting

These are suitable for all guide bushes and ball guides.

Precision ground for press fitting with internal thread

Similar to the previous pillars but they have an internal thread above or below or even on both sides.

Precision ground for press fitting

 

Pillars with middle mount shoulder

Improve the side load capacity of tools using guide plate. They can withstand loads 8 times greater

Pillars with middle mount shoulder

 

Pillars with shoulder

Enable an easy and quick assembly and disassembly of the pillars, as in for example the case where you wish to sharpen cutting tools with a surface grinder.

Pillars with shoulder and internal thread

Same as previous but with the posibility of having an internal thread on the press-in side, the guide side or on both.

Pillars with shoulder

 

Quick change guide pillars with disc and screw

These enable a quick exchange of pillars. The working time of the tool make is drastically reduced by the use of quick-change guide pillars.

Quick change guide pillars with disc and screw

  

Pillars with head, with or without oil grooves

Mounting into mounting hole ISO N7 (press fit) or ISO H7 if pillars are secured against glide out.

Pillars with oil grooves

Din 9833 / ISO 9182. Material 1.7139 (16Mn Cr5) or 1.1221 (CK60) hardness 62-64 HRC.

Pillars with head, with or without oil grooves

 

Guide bushes

We have seven types of Guide bushes: steel sliding guide bronze plated, ball guide aluminium, brass and plastic, roller guide, sliding guide with solid lubricant and sliding guide with solid lubricant bands.



 

Exchange bushes

Due to the standarised outside diameter, all guide bushings are interchangeable. A die set with a sliding guide can be changed to using a ball or roller guide without any additional work, simply by exchanging the guide bushings. For each bore, you can use:

Two different inside diameters, for example 30/32, Seven different types of guidance, for example: Three sliding and four ball guide types. Three different bushing types, for example: Shoulder, flange or smooth bushings. Three different bushing lengths (for inside diameters from 19 to 80)

Therefore, it is possible to use 128 different guide bushings for each bore.

 

Steel sliding guide bronze plated

 

The hardened steel sleve absorbs strong lateral forces and prevents the guide bushing from deforming when its being compressed strongly across its edges. The galvanized bronze plating is very hard, wear-resistant and honed to highest surface finish quality. In addition to its excellent long running wear factor it also has very good heat dissipation characteristics that ensure the rapid dispersement of excessive frictional heat.

All Steinel precision sliding guides "steel bronze plated are suplied with an internal lubrication system, where the parallel lubrication rills across the grooves are connected with axial channels. As a result, an equal distance to all lubrication points is ensured. At the same time, the internal lubrication system guarantees a shielding effect against dirt.

Steel sliding guide bronze plated

The recommended Sliding speed is 15 - 30 m/min. Under ideal conditions of lubrication, guide clearance, stroke length, radial load and heat dissipation, very high stroke speeds of 600 - 800 strokes/min can be achieved.

 

Sliding guide with solid lubricant

Our guide bushings without lubrication and without maintainance are complex sliding units, highly resistant to wear and very precise. When sliding the solid lubricant produces a continuous film, strongly attached to the guide units. This film remains on the sliding surface even when stopping or starting.

Sliding guide with solid lubricant

 

Sliding guide with solid lubricant bands

As our previous product without lubrication and therefore without maintainance these guide bushings are complex sliding units, highly resistant to wear and very precise. When sliding the solid lubricant bands produce a continuous film, strongly attached to the guide units. This bushes stroke velocity is of 30 m/min.

Sliding guide with solid lubricant bands

 

Ball Guides

Steinel ball guides due to a microfinished contact surface and uniformly selected precision steel balls have an extreme precision. ball guides have a long life span due to the free wheeling mounting and helical positioning of the balls, so that each ball has its own track. The exact size of the balls and the fact that they are previously fixed we obtain full contact in the guide giving an optimum precision. Although fixing balls with too much pressure would overload the guide. Thats why fixing has to be carried out to 4 to 14 µm depending on the guides diameter. Strokes allowed on these guides 30-40 m/min or even higher.

Ball Guides

Other features of ball cages include a device to asure the guide is fixed to the pillar, stroke control devices, and the low maintainance required, only an adequate lubrication.

There are various ball cages to fulfill our customers needs:

Aluminium ball cages Aluminium ball cages: Ball cage made of aluminium balls of steel, hardened, grade 1, sorted. Their weight is below many others. The guide is fixed to remain in position, weight reduction and same stability, translates to smaller mass forces, therefore these have longer life spans. They can withstand temperatures of 80ºC. They can have a security ring according to Din 471.

Brass ball cage Brass ball cage: Ball cage made of brass, balls of steel, hardened, grade 1, sorted. They have a high mechanical strength, best antifriction properties as well as high abrasive resistance and stability. Due to their optimum heat resistance they are suited for temperatures over 80ºC. They have a better grip due to the highest ammount of balls.

Plastic ball cage

Plastic ball cage: Made of Hostaform C plastic, balls of steel, hardened, grade 1, sorted. Heat resistant up to 90ºC. They have a smaller mass. This makes them perfect when high velocities are required. They are also good to work in aggressive environments.

 

Roller cage

Roller cages can be used in all kinds of longitudinal movement but they cant rotate over themselves. Specially useful when the guide is transversal.

Roller cage

A roller can stand loads 8 times higher than a ball with its same size. The rollers positioning prevents critical deformations, which improves their performance.

Stroke velocity can get up to 40 m/min and even higher.

The roller cage is made of aluminium, profile rollers of steel ,hardened, grade 1, sorted. The profile rollers in the cage holes are free-wheeling wedged. Thus a protection against torsion is guaranteed. The rollers are helically arranged in the axial direction, so that each roller has its own race.

Must be previously fixed to 2-4 µm.

 

STEINEL's Guide Units

Steinel products

We have at our disposal steel sliding guide Guide bushes bronze plated or with solid lubricant. Ball cages made of aluminium, brass or plastic, roller cages. We also offer Guide Pillars of lengths and diameters according to DIN 9825 / ISO 9182.

Mini Series are sets of guide units of reduced size and high precision. these sets are composed by a guide pillar, guide bushing and a ball cage. Being able to act as guides in machines and technical equipment, where precision is specially relevant. Size range: 3mm diameters, and 30mm lengths or greater.

Steinel's precision guide units have many uses. Guide units can be also used to create tools, machinery, measuring devices and vehicles. These guide units are remarkable because they are wear and abrasion resistant.

We also have available Die sets made of steel and aluminium, Die sets made of special grey cast iron and cutting units as well as other accessories (Carrying units, Magnets...)