Master Bushing MSS MDSP MSP MSPC MPCH

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Payment Terms:: TT or LC

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Supply Capability:: 30 Pieces per Month pc/month

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1.Master Bushing

2.type:MSS MDSP MSP MSPC

3.API Spec 7K ISO9001:2008

4.GB/T 28001-2001

5.GB/T 24001-2004-ISO14001:2004

Our company produce the master bushings and insert bowls with the size from 17 1/2 to 37 1/2 inch. They are cast with high-quality alloy steel and the sizes conform to API Spec 7K. There are two types, pin drive and square drive. API standard rotary slip, drill collar slip, casing slip or roller Kelly bushing can be contained in them.

Bushing Type	Rotary Table Size(in)	Insert Bowls	Handing Tubular OD (in)
Solid body and Split body	17 1/2	API Bowl 1011	2 3/8-8 5/8
	17 1/2	EXT. Bowl 1024	2 3/8-8 5/8
	20 1/2	API Bowl 1011	2 3/8-8 5/8
	20 1/2	EXT. Bowl 1024	2 3/8-8 5/8
	27 1/2	API Bowl 1022	2 3/8-8 5/8
		EXT. Bowl 1025	2 3/8-8 5/8
		Insert Bowl 1026	9 5/8-10 3/4
MDSP Split body	17 1/2	EXT. No.3 Taper	2 3/8-8 5/8
MDSP Split body	20 1/2	EXT. No.3 Taper	2 3/8-8 5/8
MSPC Solid body	20 1/2	EXT. Bowl 1809	2 3/8-8 5/8
		Bowl 1902	9 5/8-10 3/4
		Body only 1805	11 3/4-13 3/8
	27 1/2	Bowl 1810(No3)	2 3/8-8 5/8
		Bowl 1904(No2)	9 5/8-10 3/4
		Bowl 1903(No1)	11 3/4-13 3/8
MSP Solid body	27 1/2	EXT. No.3 Taper	2 3/8-8 5/8
MPCH	37 1/2	Bowl 6608(No3)	2 3/8-8 5/8
		Bowl 6609(No2)	9 5/8-10 3/4
		Bowl 6610(No1)	11 3/4-13 3/8

Q:Specific depends on what number you are cone sets, you can compare:0 1:19.212 9.0451 1:20.047 12.0652 1:20.020 17.783 1:19.922 23.8254 1:19.254 31.2675 1:19.002 44.3996 1:19.180 63.348: 0∶19.212 9.0451∶20.047 12.0652∶20.020 17.783∶19.922 23.8254∶19.254 31.2675∶19.002 44.3996∶19.180 63.348

Q:How do you determine the size of the drill sleeve with a drill diameter of 6?. Thank you: The bore size of drill sleeve is determined according to F7 tolerance. That is: 6F7,6 deviation: +0.022. deviation +0.010.

Q:I wonder if it works Because of the large number of drilled holes, the wear of common steel is relatively large. But T10 steel needs quenching. I don't have any specialized equipment here. Usually it is heated by oxygen acetylene, and then it is quenched by oil. I wonder if T10 steel is good. What about the deformation? Outside diameter 15mm, inner hole 8.6MMIf not, what is the best way to do it? Or what to replace?: Tolerable。 T06 or T08 can, but should not wear very fast quenching, the inner diameter of H8, H9, such as the outer diameter with H8/n7 this can often remove.

Q:What kinds of drill sleeves are used? What are they used for?: Drill sleeve can be divided into four kinds, namely: fixed drilling sleeve, interchangeable drill sleeve, fast change drill sleeve, special drill sleeve.Fixed drill sleeve: drill sleeve is directly pressed on the drilling template. The fixing drill sleeve is simple in structure and high in drilling accuracy, but it can not be replaced after wearing. Fixed drill sleeves are suitable for small batch production in a single drilling process.Replaceable drill sleeve: drill is sheathed in the Bush, bushing is pressed on the drilling template, and the drill sleeve is pressed by screw to prevent the drill bush from rotating or withdrawing. When the drill sleeve is worn, loosen the screws and replace them quickly. A single drilling procedure suitable for mass production.Quick change drill sleeve: its structure is similar to interchangeable drill sleeve. When the workpiece in one process has the same hole to be processed by various methods (such as drilling, reaming, reaming, tapping, etc.), the drill sleeve with different apertures can be quickly replaced. When replacing, the drill sleeve gap is turned to the screw and can be taken out.Special drill sleeve: when the structure of the workpiece is not suitable for the use of standard drill sleeve, it can design a special drill sleeve adapted to the workpiece. The height of the drill sleeve is increased by H, the guiding performance is good, the tool rigidity is improved, and the machining accuracy is high, but the abrasion of the drill sleeve and the cutter is intensified, and the H= (1 to 2.5) d is generally taken. The chip space H increases and the chip removal is convenient, but the tool rigidity and the machining accuracy of the hole will be reduced. Cast iron for drilling easier to remove chips, h= (0.3 ~ 0.7) d; drilling difficult to chip out of the steel parts, h= (0.7 ~ 1.5) d.

Q:I have seen many drilling techniques in practice, and I find that drilling jigs do not have guiding elements (i.e. drill sleeves). Why do not they use drill sleeves in actual production? And I have seen in many books drilling jig, need drill sleeve of the statement, how is this matter?Reaming in our company is also done by drilling machines. Change the drill bit to the reamer. Do you want reaming?I asked the master of the workshop why the drilling fixture does not need to drill, they do not even know what the drill sleeve is, as if they are in the design of drilling machine clamp, there is no drill sleeve concept.I really don't understand why the drilling jig is using drill sleeves If it is for the tool, you can put on a processed product, and then the tool is ok. Why?: In the actual drilling process, the drilling machine fixture should have guiding element (drill sleeve), why does your company not use drill sleeve in actual production?There may be several reasonsThe 1 bit and the products to be machined are fixed, and the drill bit has sufficient positioning for steel2 the shape tolerance of the hole to be drilled has no requirementThe 3 bit has a self - located cutting edgeReaming generally does not require additional positioning, the pre drilling itself plays a guiding role. In particular, there are positioning

Q:Drill 4.2 holes, tap 5 thread, choose what kind of drill sleeve: Look at your drill sleeve material is what, if it is rotating drill sleeve, the direct selection of about 0.02 larger than the drill can, if they do need a kind of drilling quenching, will put a bit into the hole position accuracy -- mainly depends on your workpiece hole

Q:How should the drill bit of the 4mm bit be calculated?: Drilling sets play the role of drill guide and support, they should be coordinated with precision oriented, but also can not drill and drill sleeve between too much friction, usually with H7/g6 G7/h6

Q:Can the drill jig designed in mechanical processing be without drill bush?: Less quantity can be without drill sleeveThe drill sleeve is used for drilling, hardening and tempering, and the hardness is improved

Equipped with excellent equipment, strong technique force and completed test facilities, the company is a first-level supply member of Chinese Petroleum and Natural Gas Consortium, as well as the member of China Petrochemical Material Resources Market. We have obtained the Production License issued by the nation.we believe that our company will usher in a new takeoff in the near future.

1. Manufacturer Overview
Location	Jiangsu,China
Year Established	2000
Annual Output Value
Main Markets	North America South America Mid East Central America
Company Certifications	ISO 9001:2008;ISO 14001:2004

2. Manufacturer Certificates
a) Certification Name
Range
Reference
Validity Period

3. Manufacturer Capability
a)Trade Capacity
Nearest Port
Export Percentage
No.of Employees in Trade Department
Language Spoken:	English, Chinese
b)Factory Information
Factory Size:	10,000-30,000 square meters
No. of Production Lines	4
Contract Manufacturing	OEM Service Offered Design Service Offered Buyer Label Offered
Product Price Range	Low and/or Average