Specifications

Crown block consist of crawn block frame,sheaves unite and auxiliary sheaves.
Standard: API SPEC 4F standard

1. Carcasses are made from high intensity section steel.
2. Inclined working pulley block eliminates the torsion of block, and makes the sideboard of the traveling block opposite to the derrickman exactly.
3. Rope groove of the pulley is quenched by medium frequency, to prolong the working life of the pulley.
4. Working pulley is equipped with bipyramid rolling bearing, and each bearing has an independent oil duck.
5. Equipped with catch rod, to protect wireline from jumping out or falling off.
6. Built with anti-collision buffer wood and protecting wire net.
7. With girder crane boom, for the maintenance of pulley assembly.
8. Equipped with bailing pulley and assisting pulley.
9. Pulleys and bearings could be interchanged with matched traveling block

Technical specifications and parameters for Crown Block
Model	TC135	TC170	TC225	TC315*	TC315	TC450	TC585
Maximum hook load(KN)	1350	1700	2250	3150	3150	4500	5850
Sheave OD mm (in)	915(36)	1005(40)	1120(44)	1120(44)	1270(50)	1524(60)	1524(60)
Sheave number	5	6	6	7	7	7	8
Diameter of steel wire rope mm(in)	29(1 1/8)	29(1 1/8)	32(1 1/4)	32(1 1/4)	35(1 3/8)	38(1 1/2)	42(1 5/8)
Dimension (L×W×H)mm	2500 ×2050 ×1920	2687 ×2150 ×2046	3200 ×3347 ×3640	3000 ×2300 ×2570	3295 ×2776 ×2514	3068 ×2906 ×3576	3070 ×3000 ×3600
Weight(kg)	2410	2917	5764	7400	7400	9500	12500