Crane Hook Sheave

Crane Hook Sheave China Supplier

 

 

1. Circular runout difference tl of diameter D

0≤t1≤D/100 D-mm

 

2. The allowable deviation of groove bottom radius R is t2

R	t2
< 15	+ 1.0
> 15	+ 1.5

 

3. The allowable deviation of wheel flange width b is t3

Rim	t3
1	+2
2
3	+3
4
5	+4
6
7	+5
8

 

4. Allowable deviation of outer diameter D1 is t4

D1	t4
< 250	-0.5
> 250-500	-1.0
> 500-1000	-1.5
> 1000-1200	-2.0
> 1200-1500	-2.5
> 1500-1800	-3.0
> 1800-2000	-3.5

 

5. Rope groove inner side runout tolerance is t5

T5≤2/1000 x D, D:mm

 

6. The surface hardness of the rope groove is from HB140 to HB220

 

General sealing pulley:

 

Users can select the ratio DO/d of the nominal diameter of the steel wire rope, DO (D0=D+d) of the pulley, and the diameter of the steel wire rope. The bearing model and operating environment [requiring general sealing or tight sealing (Type A)] can be selected according to the pulley series. (Table 1-4 shows the general sealing type, and Table 5-8 shows the tight sealing type.)

The marking method is as follows:

For example, select a general sealed pulley with al# rim, a DO/D value of 20, and a bearing model of 211.

Our factory can manufacture special specifications according to user requirements.

The delivery status of all products does not include bearings and internal cards. Please inform us in advance if bearings are required for the delivery status.

http://www.zziccrane.com/