Derrick Crane is a type of crane used in construction and industrial settings. It is a type of Tower Crane that has a pivoting arm, called a jib, mounted on a vertical tower. The jib can be rotated to move materials horizontally, and the crane can also lift heavy loads vertically. Derrick cranes are often used in building construction to lift and move heavy materials, such as steel beams and concrete blocks, to different levels of a construction site. They are known for their stability and ability to handle heavy loads.
Derrick crane, also known as Roof Crane, is a specific style of lifting machine. It is usually a fixed building crane, meaning it is assembled and disassembled in the location where it is used. Generally, the crane is characterized by its long, fixed length tower. These cranes are typically used in locations where items need to be moved from a common initial point to single nearby location, like on shipping platforms and construction sites. BQ models of derrick cranes including 10T Derrick Crane 2533A, 6T Derrick Crane DCB20-6, 10T Derrick Crane DCB24-10, 12T Derrick Crane DCB30-12, 16T Derrick Crane DCB30-16, 18T Derrick Crane DCB42-18.
Roof Derrick Crane,Roof Crane,10T Derrick Crane,Derrick Crane Roof Crane,Building Crane SHEN YANG BAOQUAN BUSINESS CO., LTD , https://www.sytoplesstowercrane.com
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 Timken Koyo Chrome Steel Metric & Inch Auto wheel Taper Roller Bearing
Specification :
Sr.
BEARING CODE
Dimension(mm)
Cr
(KN)Cor
(KN)
d
D
T
B
C
Rmin
rmin
1
30204
20
47
15.25
14
12
1
1
28.2
30.6
2
30205
25
52
16.25
15
13
1
1
32.2
37
3
30206
30
62
17.25
16
14
1
1
43.3
50.5
4
30207
35
72
18.25
17
15
1.5
1.5
54.2
63.5
5
30208
40
80
19.75
18
16
1.5
1.5
63
74
6
30209
45
85
20.75
19
16
1.5
1.5
67.9
83.6
7
30210
50
90
21.75
20
17
1.5
1.5
73.3
92.1
8
30211
55
100
22.75
21
18
2
1.5
90.8
113.7
9
30212
60
110
23.75
22
19
2
1.5
103.3
130
10
30213
65
120
24.75
23
20
2
1.5
120.6
152.6
11
30214
70
125.24
26.25
24
21
2
1.5
132.3
173.6
12
30215
75
130
27.25
25
22
2
1.5
138.4
185.4
13
30216
80
140
28.25
26
22
2.5
2
160.4
212.8
14
30217
85
150
30.5
28
24
2.5
2
177.6
236.8
15
30218
90
160
32.5
30
26
2.5
2
200.1
269.6
 
Company Information
    JPG Bearing . is a professional production of automotive wheel hub bearing, tensioner pulley bearing, deep groove ball bearing, taper roller bearing, automotive air-conditioner bearing and all kinds of NON-standard bearing.
 
 
  PackageÂ
1. Neutral Package: Plastic Bag + Carton + Pallet;
2. Commercial Package: Plastic Bag + Box + Carton + Pallet;
3. As the clients' requirement.
Delivery:
1. Less than 1000 pcs , we will send by express. ( Door to Door, Convenient ),
  or by  air transport. ( Fastest and safest, but expensive )
2. More than 1000pcs , we will send by sea. ( Cheapest, safe )
Â
Payment:
1. Less than 1000 pcs , 100% T/T, Western Union in advance.Â
2. Between 1000-10000pcs, TT, Western Union, MoneyGram.
3. More than 10000pcs , TT, L/C ,Western Union, MoneyGram.
Â
Â
 Timken Koyo Chrome Steel Metric & Inch Auto wheel Taper Roller Bearing
Specification :
Sr.
BEARING CODE
Dimension(mm)
Cr
(KN)Cor
(KN)
d
D
T
B
C
Rmin
rmin
1
30204
20
47
15.25
14
12
1
1
28.2
30.6
2
30205
25
52
16.25
15
13
1
1
32.2
37
3
30206
30
62
17.25
16
14
1
1
43.3
50.5
4
30207
35
72
18.25
17
15
1.5
1.5
54.2
63.5
5
30208
40
80
19.75
18
16
1.5
1.5
63
74
6
30209
45
85
20.75
19
16
1.5
1.5
67.9
83.6
7
30210
50
90
21.75
20
17
1.5
1.5
73.3
92.1
8
30211
55
100
22.75
21
18
2
1.5
90.8
113.7
9
30212
60
110
23.75
22
19
2
1.5
103.3
130
10
30213
65
120
24.75
23
20
2
1.5
120.6
152.6
11
30214
70
125.24
26.25
24
21
2
1.5
132.3
173.6
12
30215
75
130
27.25
25
22
2
1.5
138.4
185.4
13
30216
80
140
28.25
26
22
2.5
2
160.4
212.8
14
30217
85
150
30.5
28
24
2.5
2
177.6
236.8
15
30218
90
160
32.5
30
26
2.5
2
200.1
269.6
Â
Company Information
    JPG Bearing . is a professional production of automotive wheel hub bearing, tensioner pulley bearing, deep groove ball bearing, taper roller bearing, automotive air-conditioner bearing and all kinds of NON-standard bearing.
Â
Â
  PackageÂ
1. Neutral Package: Plastic Bag + Carton + Pallet;
2. Commercial Package: Plastic Bag + Box + Carton + Pallet;
3. As the clients' requirement.
Delivery:
1. Less than 1000 pcs , we will send by express. ( Door to Door, Convenient ),
  or by  air transport. ( Fastest and safest, but expensive )
2. More than 1000pcs , we will send by sea. ( Cheapest, safe )
Â
Payment:
1. Less than 1000 pcs , 100% T/T, Western Union in advance.Â
2. Between 1000-10000pcs, TT, Western Union, MoneyGram.
3. More than 10000pcs , TT, L/C ,Western Union, MoneyGram.
Â
Model NO.: 30204
Separated: Separated
Outersize: 47mm
Inner Size: 20mm
Thickness: 14mm
Item: 30204
Service: OEM Service
Own Brand: JPG
Precision: P0/P5
Seal: Open
Row: Single
Trademark: JPG
Transport Package: 1. Paper + CTN+Tray 1. Color Box+ CTN+Tray
Specification: depends on order
Origin: Jiangsu Nanjing
HS Code: 84822000
Model NO.: 30204
Separated: Separated
Outersize: 47mm
Inner Size: 20mm
Thickness: 14mm
Item: 30204
Service: OEM Service
Own Brand: JPG
Precision: P0/P5
Seal: Open
Row: Single
Trademark: JPG
Transport Package: 1. Paper + CTN+Tray 1. Color Box+ CTN+Tray
Specification: depends on order
Origin: Jiangsu Nanjing
HS Code: 84822000