Applications
Points of Selection and Handling (1) In Bearing Bush Chain, the contacting surfaces between pins and needles or needles and bushings are small. If these parts are subjected to a load larger than the allowable static load of the needle bearing, permanent deformation will occur, and the chain will not operate correctly. The chain tension, including inertia, should be lower than the rated allowable load. (2) Due to the low bending resistance, the chains will vibrate at the low-tension return side. Guide rails or guide rollers help to prevent vibration. (3) A “high-precision type,” which is more accurate in the overall chain length and the dimension of attachments, is available. (4) The double pitch chain type is basically an inch-pitch series, but there are some metric pitches available. Application Series Link plates of Bearing Bush Chain are nickel-plated to avoid rusting in indoor use. Stainless steel Bearing Bush Chain is available for corrosive conditions. However, the allowable load is limited because of the low hardness of the contacting parts. In addition, the chain will elongate gradually (Figure 3.6). Heat-resistant Bearing Bush Chain is available for temperatures up to 150°C.
Stainless Steel Bearing Bush Chain
Number of Cycles
Figure 3.6 Elongation of Stainless Steel Precision Chain
152
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