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500 Mm Wide Replacement Digger Tracks , Komatsu D21a7 D21p7 Rubber Crawler Tracks

China Shanghai Puyi Industrial Co., Ltd. certification
China Shanghai Puyi Industrial Co., Ltd. certification
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500 Mm Wide Replacement Digger Tracks , Komatsu D21a7 D21p7 Rubber Crawler Tracks

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Large Image :  500 Mm Wide Replacement Digger Tracks , Komatsu D21a7 D21p7 Rubber Crawler Tracks

Product Details:
Place of Origin: SHANGHAI
Brand Name: POOYERT
Certification: ISO9001:2000
Model Number: 500X71X72
Payment & Shipping Terms:
Minimum Order Quantity: Negotiable
Price: Negotiable
Packaging Details: wood pallet or container depends on the order
Delivery Time: 10-20 days
Payment Terms: L/C, D/A, D/P, T/T, Western Union, MoneyGram
Supply Ability: 3000 pieces per month
Detailed Product Description
Product Name: Rubber Crawler Width: 500mm
Pitch: 71mm Link: 72
Total Length: 5112 Weight: 374kg
Material: Rubber & Steel Tech: Joint Free Steel Cord
High Light:

rubber excavator tracks


rubber digger tracks

500x71x72 rubber crawler for D21A7 / D21P7 KOMATSU construction machinery excavator​


Brand Original Size
D21A7 (KOMATSU) 500x71x72
D21P7 (KOMATSU) 500x71x72


2. The notice of using rubber tracks

1.Adjust the tension of the rubber crawler so that the height, the variable range is 10-20mm when the machine is lifted. Readjust when the tension decreases. (Be careful because the rubber crawler may come off if the tension is too low).

2.Avoid projections from the frame around the rubber crawler, especially on its inner circumference. (Rubber crawlers are easily deformed; if it comes into contact with the frame, an accident such as the rubber being cut can occur).

3.Avoid sharp projections when travelling.

4.Avoid turning too fast on concrete roads with a high coefficient of friction because this can cause accidents such as cutting the rubber.

5.Be careful that no oil, ect adheres to the rubber track. If it does, wipe it off immediatedly.

6.When storing for long periods, keep indoors, away from direct sunshine and rain.

7.Replace as soon as possible when abrasion of the sprockets is observed.


Please noted that, the parameter just show the part of our size range, if you cannot find your size, please kindly inform us by email or other ways, we will customize for you.


Excavator Rubber Track
Width*Pitch length(mm) Number of Links Width*Pitch length(mm) Number of Links Width*Pitch length(mm)
130*72 28-53 300*52.5K 72-84 400*72.5KW
150*60 28-49 300*52.5KW 72-92 400*74
150*72 29-40 KB300*52.5 72-92 400*75.5K
170*60 30-40 KB300*52.5N 72-98 B400*86
180*60 30-40 JD300*52.5N 72-98 400*90
180*72 30-58 300*53K 80-84 Y400*142
180*72K 30-37 300*55 70-86 400*144
B180*72K 34-51 300*55.5K 76-82 Y400*144K
B180*72A 30-51 300*71K 72-55 420*100
H180*72 30-50 300*109N 25-42 450*71
190*60 30-40 K300*109 37-41 DW450*71
190*72 34-39 300*109WK 35-42 450*73.5
200*72 34-47 B300*84 78-52 450*76
200-*72K 37-47 T300*86K 48-52 450*81N
230*48 60-84 320*52.5 72-98 450*81W
230*48K 60-84 B320*52.5 68-98 KB450*81.5
230*72 42-56 320*54 70-84 K450*83.5
230*72K 42-56 B320*86 49-52 B450*84
230*96 30-48 320*90 52-56 B450*86
230*101 30-36 320*100 38-54 450*90
250*47K 84 320*100W 37-65 KU450*90
250*48.5K 80-88 Y320*106K 39-43 T450*100K
250*52.5K 72-78 350*52.5 70-92 K450*163
250*72 47-57 350*54.5K 80-86 485*92W
B250*72 34-60 B350*55K 77-98 500*90
B250*72B 42-58 350*56 80-86 500-92
E250*72 37-58 350*75.5K 74 500*92W
250*96 35-38 350*90 42-56 500*100
250*109 35-38 350*100 46-60 K500*146
260*55.5K 74-80 350*108 40-46 600*100
Y260*96 38-41 350*109 41-44 600*125
260*109 35-39 Y370*107K 39-41 700*100
280*72 45-64 400*72.5N 70-80 750*150
Y280*106K 35-42 400*72.5W 68-92 800*125
300*52.5N 72-98 Y400*72.5K 72-74  
300*52.5W 72-92 KB400*72.5K 68-76  


9.Parameters for lug
500 Mm Wide Replacement Digger Tracks , Komatsu D21a7 D21p7 Rubber Crawler Tracks 0
10.About Us
Shanghai Puyi Industrial Co., Ltd mainly produce Rubber Tracks in China. With rubber factory in Shanghai we are strong in offering various of rubber tracks for: crawler, bulldozer, excavator, asphalt paver, (mini)harvester, snowblower, snowmobile, wheelchair, robot…ect. Yanmar, Terex, Kubota, Bridgestone Rubber Tracks… OEM are available.
What you can get from us?

1.24 hours 7 days online service for you.
Although we have holidays, or weekends, we will try our best to reply you upon receving your requirement.

2.Offer special plan for you not just sell the product.
We can make special product plan according your requirement. More, we will advice you the optimal trade way according your condition. Our believe is, sell the optimal product and save money for our clients.


1. Are you a trading company or Manufacturer?

We maufacture products by ourselves and we source from other collaborative factories too which guarantees a competitve price and product variety.

2. How do I know your quality?

We can take product photoes for your reference and show you different quality and you can compare with others

3. I'm a end user and I need small quantity, what do I do?

Pls check with our sales team if it's in stock, if have stock and we can send you via Dhl, Fedex and so forth.

4. Can I get a sample first? And how does it charge?

As practice, we will charge the sample, and after we received the bulk order, we will return the sample fee to our customer

5. What's the benefit for long term importers or distributors?

For those regular customers, we offer incredible discount, sample free shipping, free sample for custom design, custom packaging and QC as per custom requirements.

6. What is your terms of payment?

T/T 30% as deposit, and 70% before delivery. We received paypal western union and directly bank transfer to our company account.

7.Can you produce according to the samples?

Yes, we can produce by your samples or technical drawings. We can build the molds and fixtures.

8.Do you test all your goods before delivery?

Yes, we have 100% test before delivery

9.How do you make our business long-term and good relationship?

We have good quality and competitive price to ensure our customers benefit.
We respect every customer as our friend and we sincerely do business with them.
Welcome to contact with us, Thank you very much.


Contact Details
Shanghai Puyi Industrial Co., Ltd.

Contact Person: Grace

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