About us
About us
Gerpon is mainly dealing in producer and wholesale of all kinds of wear parts and special steel product at home and abroad.
Company Culture
Company Culture
Unity, hard work, realistic, innovative
Company  news
Company news
Industry News
Industry News
Inspection equipment
Inspection equipment
Separated quality testing department equipped advanced equipment
Quality control process
Quality control process
Quality control process
Wear parts
Wear parts
Widely used in foundation drilling,coal mining industry,geotechnical engineering,etc.
Global market
Global market
Domestic market
Domestic market

Product show

roller bits for rock core barrel

1,Roller bits bearing type :  Bit leg Bearing type Applicable For

You can call us
0635-2929887

1,Roller bits bearing type : 

 

Bit leg Bearing type 

Applicable Formations

Rubber sealed bearing 

hard information, such as hard shale, anhydrite, soft limestone, sandstone, ham sandwich dolomite, etc

Metal sealed bearing 

More harder information than then former ,and more higher temperature resistant.

 

2, According to IADC code for rock formations :

IADC

WOB

(KN/mm)

RPM

(r/min)

Applicable Formations

114/116/117

0.3~0.75

180~60

Very soft formations with low compressive strength and high drillability

124/126/127

0.3~0.85

180~60

Soft formations with low compressive strength and high drillability,

214/215/216/217

0.35~0.95

150~60

Medium formations with high compress strength

437

0.35~0.95

140~60

Soft stratum, such as shale, clay, sandstone, conglomerate, etc

517

0.35~1.05

120~50

soft, and have a hard abrasive sandwich, such as hard shale, 

anhydrite, soft limestone, sandstone, ham sandwich dolomite, etc

537

0.35~1.05

110~40

soft, and have a hard abrasive sandwich, such as hard shale, 

anhydrite, soft limestone, sandstone, ham sandwich dolomite, etc

617/637

0.35~1.05

110~40

hard and abrasive high formation, such as limestone, dolomite, sandstone, chert, etc



Our Services

We welcome any custom design enquiry.  We can also customize products for you upon requests.  

Our professional engineers are available to review your drawing/sample and to discuss your needs for replacement wear parts applied on different hardness of rock.


Contact us

Gerpon(shandong) Machinery Co.,Ltd.
Add:Dongchang east road,Liaocheng ETDZ, Shandong Province, China

+86-0635-2929887
E-mail:sale@gerpon.com
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