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HQ Surface Set Core Drill Bit Reaming Shells DCDMA Standard Thread

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HQ Surface Set Core Drill Bit Reaming Shells DCDMA Standard Thread

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Large Image :  HQ Surface Set Core Drill Bit Reaming Shells DCDMA Standard Thread

Product Details:
Place of Origin: Hebei,China
Brand Name: JCDRILLS
Certification: ISO,CE
Model Number: BQ NQ HQ PQ
Payment & Shipping Terms:
Minimum Order Quantity: 5pcs
Price: Negotation
Packaging Details: Standard export package
Delivery Time: In stock or as order quantity
Payment Terms: T/T, L/C, D/P, Western Union, MoneyGram
Supply Ability: 20000pcs/Year
Detailed Product Description
Material: Synthetic Diamond, Natural Diamond Available Size: Q Series, T2 Series, T6 Series
Usage: Mining Exploration Diamond Drilling Crown Profile: Standard
Waterways: Standard /Face Discharge /Turbo /Spiral Thread: DCDMA Standard
Color: Black Applicaion: All Conventional And Wireline Core Barrel
Standard: DCDMA Standard Weight: 1.2kgs
Size: 75.44mm/45.21mm
High Light:

diamond core drill bit


reaming shell

Geological Surface Set Diamond Reaming Shells BQ NQ HQ RQ PQ with Core Bit



Reamer is set with natural or synthetic diamond,and it is used to couple the dril bit with the core barrel. Its main function is to ream the hole to the correct comstant specific diameter which ensures adequate clearance for the core barrel and sufficient clearance for the new bit which replaces an old one.It also acts as a stabilizer for drill bit.
The matrix ring of PCD Reaming Shell is set with Polycrystalline Diamond. The Polycrystalline Diamond is produced from synthetic diamond sintered with bond under high temperature and high pressure; it has an impressive abrassion resistance and high thermal stability. The PCD reaming shell is suit for soft to hard rock formations.

Surface set reaming shells are set natural diamonds outside of the shells, generally, with the stone size 20/30. The rock cutters are flushed smoothly as the well design of the waterways.
Usually, we can make two types of Surface Set Reaming Shell, one is Spiral Rib Type, another is Spiral Segments Type.
Reaming Shells are used together with Core Bits, maintaining the hole size and improving drilling stability.


1. Available in all standard drilling sizes (A, B, N, H and P).

2. Combination of natural and synthetic diamonds embedded in sections

3. Ring completely covered with diamonds


HQ Surface Set Core Drill Bit Reaming Shells DCDMA Standard Thread 0 HQ Surface Set Core Drill Bit Reaming Shells DCDMA Standard Thread 1

Reliable material and advanced technology

Our reaming shells are made with high-quality, synthetic and natural diamonds, embedded in a highly resistant matrix. They have additional protection made from friction-resistant tungsten carbide to maximize lifespan, and their maximum active surface helps to limit deviation.

Optimized choices

Surface set reaming shells in all common DCDMA sizes are a stock item. Impregnated reaming shells and reaming shells in full hole profile are also available, but may require longer lead time.

Size Available as followings:

"Q" series: AQ, BQ, NQ, HQ, PQ

“TW” series: ATW BTW NTW HTW

Five types of reaming shells for you to choose from:

Surface set Diamond Type
Impregnated Diamond Type
Tungsten Carbide Type
PCD Type
Electroplated Diamond Type


Core bits Reaming Shell
Size O.D (mm) I.D(mm) Size Set Diameter(mm)
AQ 47.75/47.50 27.10/26.85 AQ 48.13/47.88
AWG(AX) 47.75/47.50 30.23/29.97 AWG(AX) 48.13/47.88
AWM 47.75/47.50 30.23/29.97 AWM 48.13/47.88
BQ 59.69/59.44 36.52/36.27 BQ 60.07/59.82
BQ3 59.69/59.44 33.65/33.40 BQ3 60.07/59.82
BWG(BX) 59.69/59.44 42.16/41.91 BWG(BX) 60.07/59.82
BWM 59.69/59.44 42.16/41.91 BWM 60.07/59.82
NQ 75.44/75.19 47.75/47.50 NQ 75.82/75.57
NQ2 75.44/75.19 50.80/50.55 NQ2 75.82/75.57
NQ3/NQTT 75.44/75.19 45.21/44.96 NQ3/NQTT 75.82/75.57
NWG(NX) 75.44/75.19 54.86/54.61 NWG(NX) 75.82/75.57
NWM 75.44/75.19 54.86/84.61 NWM 75.82/75.57
NMLC 75.44/75.19 52.12/51.87 NMLC 75.82/75.57
HQ 95.76/95.38 63.63/63.38 HQ 96.27/95.89
HQ3/HQTT 95.76/95.38 61.24/60.99 HQ3/HQTT ---
HWG(HX) 98.98/98.60 76.33/76.08 HWG(HX) 99.36/99.11
HMLC 98.98/98.96 63.63/63.38 HMLC 98.20/97.80
PQ 122.30/121.80 85.09/84.84 PQ 122.81/122.43
PQ3 122.30/121.80 83.18/82.93 PQ3 122.81/122.43
T2-76 76.12/75.87 61.82/61.57 T2-76 76.50/76.20
T2-101 101.12/100.80 83.82/83.57 T2-101 101.50/101.20

Packing& Delivery                                                                                                                                        ​

                     HQ Surface Set Core Drill Bit Reaming Shells DCDMA Standard Thread 2


HQ Surface Set Core Drill Bit Reaming Shells DCDMA Standard Thread 3

In our after sales service system, We establish perfect control system strictly according to ISO-9000 series, in this system, technology date and problem solve solution and preventive measures will be provided in any maintain project, all the spare parts will be used in new OEM products with installation instructions, packing list, manufacturer's instruction, qualification and Warranty certificate.

We provide "one equipment & one case, endless service, namely the after sales service begin from the order confirmation, last for the working life of the equipment.

Purchase Process                                                                                                                                              ​

HQ Surface Set Core Drill Bit Reaming Shells DCDMA Standard Thread 4     HQ Surface Set Core Drill Bit Reaming Shells DCDMA Standard Thread 5

Contact Details
Beijing Jincheng Mining Technology Co., Ltd.

Contact Person: Cherry Li

Tel: +8613810751875

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