Chain sprockets 86 Chain sprockets 880 Split idler sprocket, machined B 1.67/42.5 0.63/16 OD PD S B 1.67/42.5 0.63/16 OD PD S Part Article-Nr. Z- Bore in PD in-mm OD in-mm S in-mm 545 54550 9 0.71* 4.38/111,4 4.33/110,0 2.33/59,3 545 54551Y 1 545 54552Y 1¹⁄₄ 545 54553Y 1⁷⁄₁₆ 545 54554Y 1¹⁄₂ 546 54650 10 0.71* 4.85/123,3 4.80/122,0 2.57/65,25 546 54651Y 1 546 54652Y 1¹⁄₄ 546 54653Y 1⁷⁄₁₆ 546 54654Y 1¹⁄₂ 547 54750 11 0.71* 5.32/135,2 5.31/135,0 2.80/71,2 547 54751Y 1 547 54752Y 1¹⁄₄ 547 54753Y 1⁷⁄₁₆ 547 54754Y 1¹⁄₂ 548 54850 12 0.71* 5.79/147,2 5.80/147,3 3.04/77,2 548 54851Y 1 548 54852Y 1¹⁄₄ 548 54853Y 1⁷⁄₁₆ 548 54854Y 1¹⁄₂ Material: Polyamide Screws: Stainless steel Nuts: Zinc plated steel 880 Split drive sprocket, machined Also suitable for Series 828 - 878 - 879 M - 879 TAB Part Article-Nr. Z- Bore in PD in-mm OD in-mm S in-mm 545 54501Y 9 1 4.38/111,4 4.33/110,0 2.33/59,3 545 54502Y 1¹⁄₄ 545 54503Y 1⁷⁄₁₆ 545 54504Y 1¹⁄₂ 546 54601Y 10 1 4.85/123,3 4.80/122,0 2.57/65,25 546 54602Y 1¹⁄₄ 546 54603Y 1⁷⁄₁₆ 546 54604Y 1¹⁄₂ 547 54701Y 11 1 5.32/135,2 5.31/135,0 2.80/71,2 547 54702Y 1¹⁄₄ 547 54703Y 1⁷⁄₁₆ 547 54704Y 1¹⁄₂ 548 54801Y 12 1 5.79/147,2 5.80/147,3 3.04/77,2 548 54802Y 1¹⁄₄ 548 54803Y 1⁷⁄₁₆ 548 54804Y 1¹⁄₂ *Plain Bore