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Name:Crown Block
Max. hook:
load lbs(kN):
Wireline Dia.in(mm):
Sheave O.D. in(mm):
Sheave Qty.:
Size (L xW xH) (mm):
Weight lbs(kg):

Product Description

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)


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