bushing

These series of master bushing are suitable for API standard rotary slips, drill collar slips, casing slips, insert bowls and roller bushings, with two structures: solid body and split body. Two drive types are available: pin driven and square driven. It is designed and manufactured according to API Spec 7K “Specification for Drilling Equipment”.

Casing bushing is combined by bushing body and insert bowls. It is suitable for handling casing less than 30 in. There are two types: solid and split. CU and CUL are solid bushing, and CB is split bushing.

BOTH API spider and API split master bushing have the same inner diameter with of 4”/ft on the diameter tapper. The spider body is made of high quality ally steel and heat-treated especially. The spiders are not so heavy and easy to operate. They are designed and manufactured according to API SPEC 7K standard for drilling and well servicing equipment.

Roller kelly bushing is a necessary tool for drilling. It is to drive kelly spinner by matching with master bushing. Through rotating of four rollers, the friction between rollers and kelly pipe is reduced and service life is extended. For different sizes of kelly pipe and hexagonal pipe only need to change corresponding rollers. To connect with rotary table, there are two transmission styles (square and pin). The product is designed and manufactured according to API Spec 7K “Specification for Drill Equipment”.

Model		HDS	27-HDP	20-HDP	MDS	20-MDP	17-MDP	LDS
Type		Heavy			Medium			Light
Max. torque	N.m	32365			22555			13729
	ft.lbf	23871			16636			10126
Drive Mode		Square	Pin		Square	Pin		Square
Square	mm	76.2～152.4			63.5～133.35			63.5～133.35
	in	3～6			2¹/₂～5¹/₄			2¹/₂～5¹/₄
Hex	mm	76.2～152.4			76.2～107.95			76.2～107.95
	in	3～6			3～4¹/₄			3～4¹/₄
Size	mm	630630740	630630780		493493696	510510720	458458700	508508700
	in	24.824.829.1	24.824.830.7		19.419.427.4	202028.3	181827.5	202027.5
Weight	Kg	700	730	670	420	460	340	400
	lb	1540	1610	1470	924	1012	750	808

NOTE：27-HDP same as GBX-6Z;HDS same as GBX-6.

MPCH Parts

Name of parts	Qty	P/N	Weight
Name of parts	Qty	P/N	lb	kg
Insert Bowl No.3 (Split) extended API	1	6608	625	283
Hinge pin, removable	1	6604	80	36
Hinge Pin, stationary w/lube fitting	1	6605	75	34
Hinge pin retainer	1	6606	2 oz	57
Eccentric pin	2	1014	2	0.9
Eccentric pin retainer	2	50106-22	2 oz	57
Lock	2	1016	3	1
Drive Hole Bushing w/Locking Pocket	4	3699	7	3
Liffting sling	1	6699	150	68
Bit Breaker Adapater Plate	1	1816	220	100
Insert Bowl No.1 (Split) for 13 3/8 & 11 3/4 casing	1	6610	336	152
Insert Bowl No.2 (split) for 10 3/4 & 9 5/8 casing	1	6609	470	213
Insert Bowl No.3 (split) extended API for 8 5/8 and samller size casing and drill pipe	1	6608	625	283

MSPC

Name of part	Qty	20 1/2 & 21			23			27 1/2
		P/N	Weight		P/N	Weight		P/N	Weight
		P/N	lb	kg	P/N	lb	kg	P/N	lb	kg
Insert Bowl No.3 (split) extended API	1	1809	464	210	1810	620	281	1810	620	281
Eccentric Pin	2	1013	1	0.5	1014	2	0.9	1014	2	0.9
Lock	2	1811	1 1/2	0.7	1016	3	1	1016	3	1
Retaining pin for Lock Pin	2	1028	1/4	0.1	1018	-	-	1030	-	-
Drive Hole Bushings	4	1813	3 1/2	2	1814	7	3	1814	7	3
Lifting Sling	1	1021	40	18	1021	40	18	1021	40	18
Bit Breaker Adapeter Plate	1	1815	137	62	1816	220	100	1816	220	100

MSS

Name of parts	Qty	R. Table
Name of parts	Qty	17 1/2	20 1/2 & 21	22 & 23	27 1/2
Insert Bowl (API) Split	1	1011	1011	1011	1022
Lock Pin	2	1033	1014	1014	-
Lock	2	1015	1016	1016	-
Retaining Pin for Lock Pin	2	1017	1018	1029	-
Liffting Sling Assy	1	1021	1021	1021	1021
Insert Bowl No.1 (split) for 13 3/8 & 11 3/4 OD casing		-	-	-	2002
Insert Bowl No.2 (Split) for 10 3/4 & 9 5/8 OD casing		-	-	-	1026
Insert Bowl No.1 (split) extended API for 8 5/8 OD and samller		1024	1024	1024	1025

Bit Breaker Adapter Plate locates in the Master Bushing drive pin holes and provides a 13 9/16 inch square to accommodate bit Breakers.

Lifting Slings for removing and installing bushing and bowls.