Crown Block, Crown Blocks, Oilfield Crown Block, Crown Blocks--Jereh Drilltech

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Crown Block
Crown block is necessary component used for drill rig or workover rig for lifting. The performance standard for crown block Jereh supplied is API Spec 4F & 8C.

Main Feature of Crown Block:
• The sheave groove is quenching-treated, anti-abrasion with long service life
• Equipped with wireline award device, preventing the wireline from bouncing or falling off
• Equipped with bumping wood and protective net
• Equipped with gin pole for block servicing
• Equipped with sand block and auxiliary block
• The sheaves of crown block and mated traveling block are fully interchangeable.

Technical Specifications of Crown Block

Model	JDTC30	JDTC50	JDTC90	JDTC135	JDTC170	JDTC225	JDTC315	JDTC450
Max. hook load lbs(kN)	66,000 (300)	110,000 (500)	200,000 (900)	300,000 (1,350)	37,400 (1,700)	500,000(2,250)	700,000)(3,150)	1,000,000 (4,500)
Wireline Dia.in(mm)	15/16(24)	15/16 (24)	1(26)	1-1/8 (29)	1-1/8(29)	1-1/4 (32)	1-3/8 (35)	1-1/2 (38)
Sheave O.D. in(mm)	18-3/4(475)	24(610)	26(660)	40 (1,005)	40(1,005)	44 (1,120)	50 (1,270)	60 (1,524)
Sheave Qty.	4	5	5	5	6	6	7	7
Size (L xW xH) (mm)	738x 472× 575	860× 670× 588	1,208× 1,092× 1,207	2,320× 1,436× 1,781	2,668× 2,460× 1,855	2,668× 2,709× 2,469	3,112× 2,783× 2,800	3,407× 2,722× 2,856
Weight lbs(kg)	540 (245)	1,023(464)	3,307 (1,500)	6,118(2,775)	9,988 (4,540)	11,594(5,270)	16,720 (7,600)	21,450 (9,750)