LEMAN cutting wheels How to care

l. Check the wheel 

Wheel before installation must undergo a rigorous inspection, cracks and other defects of the grinding wheel is absolutely not allowed to install and use. 

(1) Check the wheel marks. Far no marks or reinforced concrete cutting discs‍ wheel can not check, confirm wheel wheel characteristics, whether or not defects are not used. 

(2) wheel defect inspection. Its inspection methods are visual and sound checks: 

① direct visual inspection with the naked eye or with other appliances inspect wheel surface cracks or damage and other defects. 

② sound check, also known as percussion test, mainly for internal defects in the wheel, check method is to use small wooden hammer percussion wheel. Normal wheel crisp sound, sound dull, hoarse, indicating a problem. 

(3) the strength of the wheel rotation test. On the same model number of wheel rotation strength random testing should be carried out without the strength test batch prohibited wheel installation. 

2. Wheel Installation 

(1) check the wheel characteristics are consistent with requirements, the size of the grinding wheel and spindle matches. 

(2) The free wheel fitted to the wheel spindle, can not squeeze. The inner diameter of the wheel spindle and chuck with the gap properly, to avoid too large or too small. Mating tile cutting wheels‍ surfaces clean and free of debris. 

(3) Wheel chuck should be symmetrical, radial clamping surface width should be equal. Pressed flat surface, full contact with the wheel side, clamping firmly against the sides due to the unbalanced wheel force and deformed or even broken. 

Should be caught between the pads (4) Chuck and wheel end face of a certain thickness of the flexible gasket materials (such as asbestos rubber sheet, elastic thick cardboard or leather, etc.), the chuck clamping force evenly distributed. 

(5) the tightness of fastening the wheel should not compress enough to drive wheel slippage is appropriate, not too tight. When a disc with multiple bolts calories, paired diagonal sequence should gradually tighten evenly ban order fastening bolts along the circumferential direction, or time diamond cutting discs‍ to tighten a bolt. Fastening only with standard wheel chuck wrench, prohibit the use of a wrench or take a long way to increase by beating tightening force