Chain sprockets 82 Chain sprockets 805-821 Split idler sprocket, machined B 3.15/80 OD PD S B 3.15/80 OD PD S Material: Polyamide Screws: Stainless steel Nuts: Zinc plated steel 805-821 Split drive sprocket, machined Part Article-Nr. Z- Bore in PD in-mm OD in-mm S in-mm 521 52101Y 17 1 4.15/105,5 4.09/103,9 2.20/55,9 521 52102Y 1¹⁄₄ 521 52103Y 1⁷⁄₁₆ 521 52104Y 1¹⁄₂ 522 52201Y 19 1 4.62/117,3 4.61/117,0 2.44/61,9 522 52202Y 1¹⁄₄ 522 52203Y 1⁷⁄₁₆ 522 52204Y 1¹⁄₂ 523 52301Y 21 1 5.09/129,3 5.08/129,0 2.67/67,8 523 52302Y 1¹⁄₄ 523 52303Y 1⁷⁄₁₆ 523 52304Y 1¹⁄₂ 524 52401Y 23 1 5.56/141,2 5.60/142,0 2.90/73,8 524 52402Y 1¹⁄₄ 524 52403Y 1⁷⁄₁₆ 524 52404Y 1¹⁄₂ 525 52501Y 25 1 6.03/153,2 6.06/154,0 3.14/79,8 525 52502Y 1¹⁄₄ 525 52503Y 1⁷⁄₁₆ 525 52504Y 1¹⁄₂ 526 52601Y 27 1 6.50/165,2 6.57/166,8 3.38/85,8 526 52602Y 1¹⁄₄ 526 52603Y 1⁷⁄₁₆ 526 52604Y 1¹⁄₂ 527 52701Y 29 1 6.98/177,2 7.03/178,5 3.61/91,8 527 52702Y 1¹⁄₄ 527 52703Y 1⁷⁄₁₆ 527 52704Y 1¹⁄₂ Part Article-Nr. Z- Bore in PD in-mm OD in-mm S in-mm 521 52150 17 0.71* 4.15/105,5 4.09/103,9 2.20/55,9 521 52151Y 1 521 52152Y 1¹⁄₄ 521 52153Y 1⁷⁄₁₆ 521 52154Y 1¹⁄₂ 522 52250 19 0.71* 4.62/117,3 4.61/117,0 2.44/61,9 522 52251Y 1 522 52252Y 1¹⁄₄ 522 52253Y 1⁷⁄₁₆ 522 52254Y 1¹⁄₂ 523 52350 21 0.71* 5.09/129,3 5.08/129,0 2.67/67,8 523 52351Y 1 523 52352Y 1¹⁄₄ 523 52353Y 1⁷⁄₁₆ 523 52354Y 1¹⁄₂ 524 52450 23 0.71* 5.56/141,2 5.60/142,0 2.90/73,8 524 52451Y 1 524 52452Y 1¹⁄₄ 524 52453Y 1⁷⁄₁₆ 524 52454Y 1¹⁄₂ 525 52550 25 0.71* 6.03/153,2 6.06/154,0 3.14/79,8 525 52551Y 1 525 52552Y 1¹⁄₄ 525 52553Y 1⁷⁄₁₆ 525 52554Y 1¹⁄₂ 526 52650 27 0.71* 6.50/165,2 6.57/166,8 3.38/85,8 526 52651Y 1 526 52652Y 1¹⁄₄ 526 52653Y 1⁷⁄₁₆ 526 52654Y 1¹⁄₂ 527 52750 29 0.71* 6.98/177,2 7.03/178,5 3.61/91,8 527 52751Y 1 527 52752Y 1¹⁄₄ 527 52753Y 1⁷⁄₁₆ 527 52754Y 1¹⁄₂ *Plain Bore