Cable clamps for coal mining machines are widely used in drag and protection systems for power cables and water pipes in drum coal mining machines. The cable clamps come in four types: LJU, LJC, LJO, and LJH, with a total of 18 specifications. 1. Appearance: The surface of cable clamps for coal mining machines should be smooth and flat; surfaces covered with non-metallic materials should not expose steel plates. The cable clamps should rotate flexibly and bend freely when connected in series, with the bending angle meeting the technical drawing requirements. 2. Basic Dimensions: The geometric dimensions of cable clamps for coal mining machines should comply with Table 1 and the processing drawings. The hole diameter tolerance is H13 (GB/T 1800.4-1999), the hole spacing tolerance is GB/T 1804 level f (GB/T 1804-1992), the size tolerance for H and A is MT4 level (GB/T 14486-2008), and the remaining size tolerances are manufactured according to the unmarked size tolerance MT5 level (GB/T 14486-2008) (see Figures 1-4). 3. Tensile Strength: During testing according to clause 7.4 of MT/T117-2007, the tensile strength of the cable clamps for coal mining machines should reach the working load specified in Table 2, maintain for 2 minutes, and no residual deformation, cracking, or detachment should be found upon unloading. 4. Breaking Strength: During testing according to clause 7.5 of MT/T117-2007, the breaking strength of the cable clamps for coal mining machines should not be less than the specifications in Table 2. 5. Impact Resistance: During testing according to clause 7.6 of MT/T117-2007, the cable clamps for coal mining machines should be able to withstand the impact energy specified in Table 2, and the cable clamp should not crack after the impact. 6. Bending Angle: The bending angle and its tolerance between adjacent cable clamps for coal mining machines should comply with the specifications in Table 3, or as agreed upon by both parties.