Chain sprockets 84 Chain sprockets 820-831 Split idler sprocket, machined 1.62/41.3 B OD PD S 0.59/15 1.62/41.3 B OD PD S 0.59/15 Part Article-Nr. Z- Bore in PD in-mm OD in-mm S in-mm 535 53550 17 0.71* 4.15/105,5 4.09/103,9 2.20/55,9 535 53551Y 1 535 53552Y 1¹⁄₄ 535 53553Y 1⁷⁄₁₆ 535 53554Y 1¹⁄₂ 536 53650 19 0.71* 4.62/117,3 4.61/117,0 2.44/61,9 536 53651Y 1 536 53652Y 1¹⁄₄ 536 53653Y 1⁷⁄₁₆ 536 53654Y 1¹⁄₂ 537 53750 21 0.71* 5.09/129,3 5.08/129,0 2.67/67,8 537 53751Y 1 537 53752Y 1¹⁄₄ 537 53753Y 1⁷⁄₁₆ 537 53754Y 1¹⁄₂ 538 53850 23 0.71* 5.56/141,2 5.60/142,0 2.90/73,8 538 53851Y 1 538 53852Y 1¹⁄₄ 538 53853Y 1⁷⁄₁₆ 538 53854Y 1¹⁄₂ 539 53950 25 0.71* 6.03/153,2 6.06/154,0 3.14/79,8 539 53951Y 1 539 53952Y 1¹⁄₄ 539 53953Y 1⁷⁄₁₆ 539 53954Y 1¹⁄₂ 540 54050 27 0.71* 6.50/165,2 6.57/166,8 3.38/85,8 540 54051Y 1 540 54052Y 1¹⁄₄ 540 54053Y 1⁷⁄₁₆ 540 54054Y 1¹⁄₂ 541 54150 29 0.71* 6.98/177,2 7.03/178,5 3.61/91,8 541 54151Y 1 541 54152Y 1¹⁄₄ 541 54153Y 1⁷⁄₁₆ 541 54154Y 1¹⁄₂ Material: Polyamide Screws: Stainless steel Nuts: Zinc plated steel 820-831 Split drive sprocket, machined Part Article-Nr. Z- Bore in PD in-mm OD in-mm S in-mm 535 53501Y 17 1 4.15/105,5 4.09/103,9 2.20/55,9 535 53502Y 1¹⁄₄ 535 53503Y 1⁷⁄₁₆ 535 53504Y 1¹⁄₂ 536 53601Y 19 1 4.62/117,3 4.61/117,0 2.44/61,9 536 53602Y 1¹⁄₄ 536 53603Y 1⁷⁄₁₆ 536 53604Y 1¹⁄₂ 537 53701Y 21 1 5.09/129,3 5.08/129,0 2.67/67,8 537 53702Y 1¹⁄₄ 537 53703Y 1⁷⁄₁₆ 537 53704Y 1¹⁄₂ 538 53801Y 23 1 5.56/141,2 5.60/142,0 2.90/73,8 538 53802Y 1¹⁄₄ 538 53803Y 1⁷⁄₁₆ 538 53804Y 1¹⁄₂ 539 53901Y 25 1 6.03/153,2 6.06/154,0 3.14/79,8 539 53902Y 1¹⁄₄ 539 53903Y 1⁷⁄₁₆ 539 53904Y 1¹⁄₂ 540 54001Y 27 1 6.50/165,2 6.57/166,8 3.38/85,8 540 54002Y 1¹⁄₄ 540 54003Y 1⁷⁄₁₆ 540 54004Y 1¹⁄₂ 541 54101Y 29 1 6.98/177,2 7.03/178,5 3.61/91,8 541 54102Y 1¹⁄₄ 541 54103Y 1⁷⁄₁₆ 541 54104Y 1¹⁄₂ *Plain Bore