Chain sprockets 83 Chain sprockets 8157 Split idler sprocket, machined B 2.24/57 OD PD S Part Article-Nr. Z- Bore in PD in-mm OD in-mm S in-mm 528 52850 17 0.71* 4.15/105,5 4.09/103,9 2.20/55,9 528 52851Y 1 528 52852Y 1¹⁄₄ 528 52853Y 1⁷⁄₁₆ 528 52854Y 1¹⁄₂ 529 52950 19 0.71* 4.62/117,3 4.61/117,0 2.44/61,9 529 52951Y 1 529 52952Y 1¹⁄₄ 529 52953Y 1⁷⁄₁₆ 529 52954Y 1¹⁄₂ 530 53050 21 0.71* 5.09/129,3 5.08/129,0 2.67/67,8 530 53051Y 1 530 53052Y 1¹⁄₄ 530 53053Y 1⁷⁄₁₆ 530 53054Y 1¹⁄₂ 531 53150 23 0.71* 5.56/141,2 5.60/142,0 2.90/73,8 531 53151Y 1 531 53152Y 1¹⁄₄ 531 53153Y 1⁷⁄₁₆ 531 53154Y 1¹⁄₂ 532 53250 25 0.71* 6.03/153,2 6.06/154,0 3.14/79,8 532 53251Y 1 532 53252Y 1¹⁄₄ 532 53253Y 1⁷⁄₁₆ 532 53254Y 1¹⁄₂ 533 53350 27 0.71* 6.50/165,2 6.57/166,8 3.38/85,8 533 53351Y 1 533 53352Y 1¹⁄₄ 533 53353Y 1⁷⁄₁₆ 533 53354Y 1¹⁄₂ 534 53450 29 0.71* 6.98/177,2 7.03/178,5 3.61/91,8 534 53451Y 1 534 53452Y 1¹⁄₄ 534 53453Y 1⁷⁄₁₆ 534 53454Y 1¹⁄₂ B 2.24/57 OD PD S Material: Polyamide Screws: Stainless steel Nuts: Zinc plated steel 8157 Split drive sprocket, machined Part Article-Nr. Z- Bore in PD in-mm OD in-mm S in-mm 528 52801Y 17 1 4.15/105,5 4.09/103,9 2.20/55,9 528 52802Y 1¹⁄₄ 528 52803Y 1⁷⁄₁₆ 528 52804Y 1¹⁄₂ 529 52901Y 19 1 4.62/117,3 4.61/117,0 2.44/61,9 529 52902Y 1¹⁄₄ 529 52903Y 1⁷⁄₁₆ 529 52904Y 1¹⁄₂ 530 53001Y 21 1 5.09/129,3 5.08/129,0 2.67/67,8 530 53002Y 1¹⁄₄ 530 53003Y 1⁷⁄₁₆ 530 53004Y 1¹⁄₂ 531 53101Y 23 1 5.56/141,2 5.60/142,0 2.90/73,8 531 53102Y 1¹⁄₄ 531 53103Y 1⁷⁄₁₆ 531 53104Y 1¹⁄₂ 532 53201Y 25 1 6.03/153,2 6.06/154,0 3.14/79,8 532 53202Y 1¹⁄₄ 532 53203Y 1⁷⁄₁₆ 532 53204Y 1¹⁄₂ 533 53301Y 27 1 6.50/165,2 6.57/166,8 3.38/85,8 533 53302Y 1¹⁄₄ 533 53303Y 1⁷⁄₁₆ 533 53304Y 1¹⁄₂ 534 53401Y 29 1 6.98/177,2 7.03/178,5 3.61/91,8 534 53402Y 1¹⁄₄ 534 53403Y 1⁷⁄₁₆ 534 53404Y 1¹⁄₂ *Plain Bore