Sprocket Rim in crawler machines

When a machine operates in material that packs into the root of the sprocket's teeth, the sprocket, in effect, becomes larger in diameter. As a result, the chain becomes tighter and exerts greater pressure on the sprocket teeth, idlers and rollers, resulting in accelerated general wear.

When a machine with severely packed sprockets moves forward, the chain's bushings can be forced into initial contact with the reverse-drive side of the sprocket tooth (near the tip), causing accelerated wear on the tooth and the sprocket. As the bushing slides across the tooth to engage the forward-drive side, added wear can occur.

When the same machine operates in reverse, bushings are picked up more on the forward-drive side of the tooth and will slide under load to the reverse-drive side.

Packed sprockets, therefore, can result in abnormal wear on both sides of the sprocket tooth and on both sides of the bushing.

When a crawler is operated in reverse, the bushing at about the 12 o'clock position rotates and slides against the sprocket tooth's reverse-drive side, just when the bushing is under maximum load. As a result, the reverse-drive side of sprocket teeth will wear, as will the corresponding surfaces on the bushings.


Eventually, wear will progress to form a pocket in the root of the tooth. Directional changes also contribute to root wear, since the bushings slide across the bottom of the sprocket teeth when the machine changes its direction of travel. Elevated-sprocket machines exhibit less of this wear, because fewer bushings are engaged in the sprocket.

Quanzhou Wolter Construction Machine Spare Parts Factory will help to get the best sprocket rim with the most competitive price.

Don't hesitate, contact us at : woltermachine@hotmail.com
Visit us at : www.woltermachine.com

Carrier Roller / Top Roller

Today Wolter Machine will introduce Carrier Roller / Top Roller of crawler machines like crawler excavator and crawler bulldozer.

What's Carrier Roller / Top Roller?

They also have different shapes, some people also just called them Roller......

What's the use of Carrier Roller / Top Roller?

Carrier Roller is to support track chain, like its name " Carry", carries track chain to move on so the track chain has a certain degree of tension.

What's the structure of Carrier Roller?

There are shafe, bearing, cover, roller shell, sealing, very simple.

If you need more details, contact us at: www.woltermachine.com

What's undercarriage of crawler machine?

What's undercarriage of crawler machine?

When you buy a crawler machine, approximately 20% of your crawler's purchase price is for undercarriage, More importantly, nearly 50% of your maintenance costs will go into maintaining it.

So it's very important to buy good quality undercarriage, because it will save you more cash in the long term.

What are the components of undercarriage?
Let's see below together :

There are : Track Roller、Carrier Roller、Sprocket、Idler、
                   Track Shoe/Track Shoe Assembly、Tack Link Assembly、
                    Recoil Spring+Track Cylinder (you can call them Track Adjuster)、
                    also there are few small parts like Track Link Guard、Track Pin & Bushing、
                    Track Bolt & Nut.

We are mainly manufacturing Track Adjuster ( Recoil Spring + Track Cylinder), Track Link Guard, Track Pin & Bushing, Track Bolt & Nut.

So how long will the undercarriage work?
It depends on your working condition and your maintenance.
For example, if you use them in Mine area, then usually they work for 6 months, 
if you use them in city construction or house construction, usually they work for 12 months.

Now we know about the undercarriage, so in my blog, I will give more description of every component, follow my blog, follow us : www.woltermachine.com

Track Roller / Bottom Roller / Lower Roller

What's the definition of track roller?  

Track Roller also can be called Bottom Roller, Lower Roller, some people just called it roller, it's been used in a crawler machine like crawler excavator, crawler bulldozer.

So we gave the definition as below:

In a crawler machine, the small wheels that are under the track frame and that rest on the track chain.

Here I just put a reference photo for you to understand 

Today we are talking about Track Roller / Bottom Roller / Lower Roller, how does it look like?

They look like 

                   
                     or

They have different shapes, so here we show some drawings

How to buy the track rollers?

First you have to know the shape, then you have to check the dimensions, here I also show you some for your reference

Anyway, if you need more help, you can contact me, woltermachine.com