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Master Casing Bushing

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Master casing bushing selection chart

	Size	MPCH		MSPC		MSP/MDSP
	Size	Complete	Body Only	Complete	Body Only	Complete
API Standard	27 1/2	-	-	1804-1	1808-1	5429-1
EMSCO	T-2750	-	-	1804-1	1808-1	5429-1
	G-27 1/2	-	-	1804-5	1808-5	5429-5
	H-27 1/2	-	-	1804-2	1808-2	5429-2
	K-27 1/2, KS, P1	-	-	1804-3	1808-3	5429-3
	T-3750 (S/N 1-48)	6600-2A	6601-2A	-	-	-
	T-3750/4950 (49 /UP)	6600-2	6601-2	-	-	-
Garnder Denver	RT 27 1/2	-		1804-1	1808-1	5419-1
Garnder Denver	RT 37 1/2	6600-7	6601-7	-	-	-
IDECO	27 1/2	-	-	1804-7	1808-7	5429-7
IDECO	37 1/2	6600-4	6601-4	-	-	-
National	MS 27 1/2, A & B 27 1/2	-	-	1804-5	1808-5	5429-5
	C-365	6600-5	6601-5	-	-	-
	C-375	6600-1	6601-1	-	-	-
Oilwell	A-27 1/2	-	-	1804-1	1808-1	5429-1
Oilwell	A-37 1/2	6600-3	6601-3	-	-	-
Wirth	27 1/2	-	-	1804-1	1808-1	5429-1
Wirth	37 1/2	6600-3	6601-3	-	-	-

MPCH Casing Bushing

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The 37 1/2" MPCH is a Pin Drive Hinged Master Bushing specially designed for floating and semi-submersible drilling operations.With insert bowl No. 3 and optional insert bowls No. 1 and No. 2, the MPCH will handle tubulars from 2 3/8" to 13 3/8" OD. Unit comes complete with No. 3 insert bowl, bit breaker adapter plate and lifting sling.

For use with Rotary Table

	table sizes	w/No.3 Bowl, sling & BB Adapter			w/o No.3 Bowl, sling & BB Adapter
		P/N	Weight		P/N	Weight
		P/N	lb	kg	P/N	lb	kg
EMSCO	37 1/2 (S/N 1-48)	6600-2A	4325	1962	6601-2A	3325	1508
	37 1/2 (S/N 49 up 49 1/2)	6600-2	4149	1882	6601-2	3149	1428
Oilwell	37 1/2 to 49 1/2	6600-3	4245	1925	6601-3	3245	1472
IDECO	37 1/2	6600-4	4015	1821	6601-4	3015	1367
National	36 1/2	6600-5	3910	1773	6601-55	2905	1318
	37 1/2 to 49 1/2	6600-1	4029	1827	6601-1	3029	1374
Wirth	37 1/2 to 49 1/2	6600-6	4245	1925	6601-6	3245	1472

MDSP Casing Bushing

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17-1/2" and 20-1/2" Medium Duty Pin Drive Split Master Bushing are designed for shal low to medium depth service. Extended API Taper The MDSP Master Bushings have an extended APT taper in the bowls that provides 50 % more slip support than do square drive bushings. Varco SDML slips, used in the MDSP master bushing are a proven combination that can handle drilling to 15,000 feet.
Note : Varco BJ does not recommend using split master bushings in rotary tables with more than 3/16" (5 mm) wear in the rotary table bore. Rebuild rotary bore or purchase a solid type bushing. Units come complete with bit breaker, adapter plate and lifting sling.

MPCH Parts

	Rotary Table sizes	w/sling & BB Adapter			w/o Sling & BB Adapter
		P/N	weight		P/N	weight
		P/N	lb	kg	P/N	lb	kg
API	17 1/2	70517-1	737	334	70526-1	577	262
API	20 1/2	70540-1	1100	499	70539-1	924	419
Bethlehem	17 1/2	70527-2	737	334	70526-2	577	262
	B175	70527-3	737	334	70526-3	577	262
	B-210 (5-in flange)	70540-2	1100	449	70539-2	924	419
	B-210 ( 5 1/2 in flange)	70540-3	1100	449	70539-2	924	419
Brewster	OB-18 & RSH-18	70527-4	737	334	70526-4	577	262
Continenal	T1750	70527-1	737	334	70526-1	577	262
Emsco	L-17	70527-5	737	334	70526-5	577	262
	O-17 1/2 & P-17 1/2	70527-6	737	334	70526-6	577	262
	T2050	70540-4	1100	449	70539-4	924	419
	20 1/2, O, P, PJ, J, JA, JC, JAC, JACS, JAS, JCS, & JS	70540-5	1100	449	70539-5	924	419
Gardner Denver	20 1/2, JAB, JABS, JB, & JBS	70540-6	1100	449	70539-6	924	419
Gardner Denver	RT- 17 1/2	70527-1	737	334	70526-1	577	262
Haniel & Lueg	L- 17 1/2	70527-1	737	334	70526-1	577	262
Ideco	17 1/4	70527-7	737	334	70426-7	577	262
	17 1/2 & HS-175	70527-8	737	334	70526-8	577	262
	20 1/2	70540-1	1100	449	70539-1	924	419
National	17 1/2, A175, & B-175	70527-9	737	334	70526-9	577	262
National	A205 & 20 1/2	70540-4	1100	449	70539-4	924	419
Oilwell	A 17 1/2	70527-10	737	334	70526-10	577	262
	17 1/2	70527-11	737	334	70526-11	577	262
	A 20 1/2	70540-4	1100	449	70539-3	924	419
	20 1/2	70540-7	1100	449	70539-7	924	419
	21 & 21 A	70540-8	1100	449	70539-8	924	419