TCVN2537:1978

Tiêu chuẩn quốc gia TCVN 2537:1978 về Nắp có rãnh vòng bít - Kết cấu và kích thước TCVN 2537:1978 NẮP CÓ RÃNH VÒNG BÍT - KẾT CẤU VÀ KÍCH THƯỚC Caps with groove for felt ring - Design and dimensions Lời nói đầu Tiêu chuẩn này được chuyển đổi năm 2008 từ Tiêu chuẩn Việt Nam cùng số hiệu thành Tiêu chuẩn Quốc gia theo quy định tại khoản 1 Điều 69 của Luật Tiêu chuẩn và Quy chuẩn kỹ thuật và điểm a khoản 1 Điều 6 Nghị định số 127/2007/NĐ-CP ngày 1/8/2007 của Chính phủ quy định chi tiết thi hành một số điều của Luật Tiêu chuẩn và Quy chuẩn kỹ thuật. NẮP CÓ RÃNH VÒNG BÍT - KẾT CẤU VÀ KÍCH THƯỚC Caps with groove for felt ring - Design and dimensions 1. Tiêu chuẩn này áp dụng cho nắp có rãnh vòng bít dùng để che kín bộ phận ổ lăn, cố định chiều trục, ổ và tiếp nhận tải trọng chiều trục. Tiêu chuẩn này không áp dụng cho các nắp của đơn vị lắp ghép yêu cầu có khối lượng nhỏ nhất (chế tạo máy vận tải) và có độ chính xác định vị ổ thấp (chế tạo máy nông nghiệp), cũng như không áp dụng cho các nắp kiểu chuyên dùng (có mặt bích cắt, có các chi tiết kẹp chặt được thống nhất hóa trong giới hạn của đơn vị lắp ghép). 2. Nắp phải được chế tạo theo hai loại: - Có kẹp chặt bằng vít; - Có kẹp chặt bằng bu - lông. 3. Kết cấu và kích thước của nắp phải theo chỉ dẫn trên hình vẽ và trong bảng. CHÚ THÍCH: 1) Cho phép chế tạo trên nắp các lỗ tra dầu hoặc các thiết bị tra dầu; 2) Khi sử dụng nắp để lắp ổ có các yếu tố lồi của vòng cách kiểm tra xem có độ hở giữa nắp và vòng cách không. * Kích thước tham khảo: Ví dụ ký hiệu quy ước của nắp có rãnh vòng bít theo loại 2, đường kính D = 65 mm; D4 = 36 mm: Nắp - 65 x 36 TCVN 78 4. Yêu cầu kỹ thuật theo TCVN...78. 5. Các kích thước phụ của các thành phần của nắp chỉ dẫn trong Phụ lục của TCVN...78 mm D (sai lệch giới hạn theo h8 hoặc d11) D1 D2 D3 Đường kính trục hoặc ống lót D4 (Sai lệch giới hạn theo H12) D5 d d1 d2 n H* h l L 1 B a b c r Khối lượng nắp kg ≈ 13 22 34 9 4 5 8 4,8 8 10 3 9 3 1,5 6,0 7,5 1,5 2 0,6 0,3 0,02 5 6 9 2,0 8 8 12 15 25 36 11 5 6 9 1,5 0,03 6 7 10 2,0 8 9 13 16 4 5 8 1,5 5 6 9 17 7 8 12 2,0 5 6 9 1,5 0,04 6 7 10 7 8 12 2,0 9 10 14 19 28 40 14 5 6 9 2 7 6 7 10 7 8 12 8 9 13 10 11 19 20 7 8 12 9 10 14 22 32 45 16 6 7 10 5,8 10 13 3 12 4 2,0 9,0 10 1,5 3 0,6 0,3 0,07 7 8 12 2,0 8 9 13 10 11 19 12 13 21 24 36 50 18 7 8 12 5,8 10 12 3 12 4 2,0 9,0 10 2,0 3 0,6 0,3 0,08 8 9 13 9 11 19 10 11 19 12 13 21 15 16 24 26 8 9 13 9 10 14 10 11 19 12 13 21 15 16 24 28 42 55 24 10 11 19 0,10 12 13 21 15 16 24 3,0 17 18 28 9,0 3,0 30 8 9 13 9,5 2,0 10 11 19 15 16 24 17 18 28 3,0 32 10 11 19 2,0 12 13 21 15 16 24 17 18 28 3,0 35 48 65 28 9 10 14 2,0 0,17 10 11 19 15 16 24 35 48 65 28 17 18 28 5,8 10 12 3 12 4 3,0 9,5 9,0 3,0 3 0,6 0,3 0,17 20 21 31 37 10 11 19 2,0 0,18 12 13 21 17 18 28 3,0 20 21 31 40 54 70 34 15 16 24 7 12 14 4 15 5 8,0 12,5 7,0 2,0 4 0,6 0,6 0,23 17 18 28 7,0 8,0 3,0 20 21 31 25 26 38 6,0 7,0 4,0 42 12 13 21 8,0 9,0 2,0 15 16 24 20 21 31 7,0 8,0 3,0 25 26 38 6,0 9,0 4,0 44 60 78 38 17 18 28 7,0 8,0 3,0 0,27 45 20 21 31 30 31 43 6,0 9,0 4,0 47 15 16 24 8,0 7,0 2,0 1,0 17 18 28 7,0 8,0 3,0 20 21 31 25 26 38 6,0 9,0 4,0 30 31 43 50 66 82 44 30 31 43 1,0 0,6 0,31 52 17 18 28 7,0 8,0 3,0 20 21 31 25 26 38 6,0 9,0 4,0 52 66 82 44 30 31 43 7 12 14 4 15 5 6,0 12,5 9,0 4,0 4 1,0 0,6 0,31 35 36 48 55 75 95 48 25 26 38 0,33 30 31 43 35 36 48 40 41 53 58 45 46 58 60 78 52 25 26 38 0,44 30 31 43 35 36 48 40 41 53 62 17 18 28 7,0 8,0 3,0 20 21 31 25 26 38 6,0 9,0 4,0 30 31 43 35 36 48 40 41 53 45 46 58 65 84 105 58 35 36 48 9 15 20 4 18 6 8,0 15,0 10,0 4,0 0,57 45 46 58 68 30 31 43 35 36 48 40 41 53 45 46 58 50 51 67 7,0 11,0 5,0 0,57 70 90 110 62 20 21 31 8,0 10,0 4,0 0,64 70 90 110 62 40 41 53 9 15 20 4 18 6 8,0 15,0 10,0 4,0 4 1,0 0,6 0,64 50 51 67 7,0 11,0 5,0 72 20 21 31 9,0 9,0 3,0 25 26 38 8,0 10,0 4,0 30 31 43 35 36 48 40 41 53 45 46 58 50 51 67 7,0 11,0 5,0 55 56 72 75 64 35 36 48 8,0 10,0 4,0 45 46 58 55 56 72 7,0 11,0 5,0 80 100 120 72 25 26 38 6 8,0 10,0 4,0 0,74 30 31 43 35 36 48 40 41 53 45 46 58 50 51 67 7,0 11,0 5,0 55 56 72 60 61,5 77 85 100 120 72 35 36 48 8,0 10,0 4,0 0,81 40 41 53 45 46 58 50 51 67 7,0 11,0 5,0 55 56 72 85 100 120 72 60 61,5 77 9 15 20 6 18 6 7,0 15,0 11,0 5,0 4 1,0 0,6 0,81 90 110 130 80 30 31 43 8,0 10,0 4,0 0,91 35 36 48 40 41 53 45 46 58 50 51 67 7,0 11,0 5,0 55 56 72 60 61,5 77 65 66,5 82 95 110 130 80 40 41 53 8,0 10,0 4,0 50 51 67 7,0 11,0 5,0 60 61,5 77 70 71,5 89 6,0 12,0 6,0 100 120 145 90 35 36 48 11 18 24 23 8 14,0 20,5 9,0 4.0 5 1,6 1,04 40 41 53 45 46 58 50 51 67 13,0 10,0 5,0 55 56 72 65 66,5 82 70 71,5 89 12,0 11,0 6,0 75 76,5 94 105 130 155 95 45 46 58 14,0 9,0 4.0 1,50 55 56 72 13,0 10,0 5,0 70 71,5 89 12,0 11,0 6,0 75 76,5 94 80 81,5 99 110 130 155 95 40 41 53 11 18 24 6 23 8 14,0 20,5 9,0 4.0 5 1,6 0,6 1,50 45 46 58 50 51 67 13,0 10,0 5,0 55 56 72 60 61,5 77 70 71,5 89 12,0 11,0 6,0 75 76,5 94 80 81,5 99 85 86,5 104 115 140 165 105 65 66,5 82 13,0 10,0 5,0 1,70 75 76,5 94 12,0 11,0 6,0 80 81,5 99 85 86,5 104 120 45 46 58 13,0 10,0 5,0 50 51 67 12,0 11,0 6,0 55 56 72 60 61,5 77 65 66,5 82 75 76,5 94 80 81,5 99 85 86,5 104 90 92 111 11,0 12,0 7,0 125 150 175 115 55 56 72 19,5 5,0 1,90 70 71,5 89 10,0 13,0 6,0 80 81,5 99 85 86,5 104 125 150 175 115 90 92 111 11 18 24 6 23 8 9,0 19,5 14,0 7,0 5 1,6 0,6 1,90 100 102 125 8,0 15,0 8,0 130 50 51 67 11,0 12,0 5,0 55 56 72 60 61,5 77 65 66,5 82 70 71,5 89 10,0 13,0 6,0 75 76,5 94 85 86,5 104 90 92 111 9,0 14,0 7,0 95 97 116 100 102 125 8,0 15,0 8,0 135 160 185 125 60 61,5 77 11,0 12,0 5,0 2,40 75 76,5 94 10,0 13,0 6,0 90 92 111 9,0 14,0 7,0 100 102 125 8,0 15,0 8,0 140 55 56 72 11,0 12,0 5,0 60 61,5 77 65 66,5 82 70 71,5 89 10,0 13,0 6,0 75 76,5 94 80 81,5 99 85 86,5 104 90 92 111 9,0 14,0 7,0 95 97 116 100 102 125 8,0 15,0 8,0 140 160 185 125 110 112 135 11 18 24 6 23 8 8,0 19,5 15,0 8,0 5 1,6 0,6 2,40 145 170 195 130 75 76,5 94 10,0 13,0 6,0 2,80 95 97 116 9,0 14,0 7,0 105 107 130 8,0 15,0 8,0 110 112 135 120 122 145 150 180 210 135 60 61,5 77 13 20 26 28 10 15,0 24,0 13,0 5,0 6 0,8 3,60 70 71,5 89 14,0 14,0 6,0 75 76,5 94 80 81,5 99 85 86,5 104 90 92 111 13,0 15,0 7,0 95 97 116 100 102 125 12,0 16,0 8,0 105 107 130 110 112 135 120 122 145 155 70 71,5 89 14,0 14,0 6,0 90 92 111 13,0 15,0 7,0 110 112 135 12,0 16,0 8,0 120 122 145 160 190 220 145 65 66,5 82 15,0 13,0 5,0 3,90 75 76,5 94 14,0 14,0 6,0 80 81,5 99 90 92 111 13,0 15,0 7,0 95 97 116 160 190 220 145 105 107 130 13 20 26 6 28 10 12,0 24,0 16,0 8,0 6 1,6 0,8 3,90 110 112 135 120 122 145 165 100 102 125 120 122 145 130 132 159 11,0 17,0 9,0 170 200 230 155 70 71,5 89 12,0 14,0 6,0 4,10 80 81,5 99 14,0 14,0 6,0 85 86,5 104 95 97 116 13,0 15,0 7,0 100 102 125 12,0 16,0 8,0 105 107 130 110 112 135 120 122 145 130 132 159 11,0 17,0 9,0 175 125 127 154 180 210 240 160 70 71,5 89 14,0 14,0 6,0 4,60 75 76,5 94 85 86,5 104 90 92 111 13,0 15,0 7,0 100 102 125 12,0 16,0 8,0 110 112 135 120 122 145 130 132 159 11,0 17,0 9,0 140 142 173 10,0 18,0 10,0 190 225 255 175 75 76,5 94 14,0 14,0 6,0 5,20 190 225 255 175 80 81,5 99 13 20 26 6 28 10 14,0 24,0 14,0 6,0 6 1,6 0,8 5,20 90 92 111 13,0 15,0 7,0 95 97 116 105 107 130 12,0 16,0 8,0 110 112 135 200 80 81,5 99 14,0 14,0 6,0 100 102 125 12,0 16,0 8,0 110 112 135 120 122 145 130 132 159 11,0 17,0 9,0 140 142 173 10,0 18,0 10,0 160 162 193 210 235 265 190 85 86,5 104 14,0 14,0 6,0 5,80 100 102 125 12,0 16,0 8,0 105 107 130 120 122 145 11,0 17,0 9,0 130 132 159 10,0 18,0 10,0 140 142 173 150 152 183 160 162 193 215 250 280 200 90 92 111 13,0 15,0 7,0 6,80 100 102 125 12,0 16,0 8,0 110 112 135 120 122 145 140 142 173 10,0 18,0 10,0 150 152 183 215 250 280 200 170 172 203 13 20 26 6 28 10 10,0 24,0 18,0 10,0 6 1,6 0,8 6,80 220 130 132 159 11,0 17,0 9,0 160 162 193 10,0 18,0 10,0 170 172 203 225 265 300 208 90 92 111 17 28 32 6 35 12 18,0 30,0 17,0 7,0 7 1,6 0,8 8,80 95 97 116 105 107 130 17,0 18,0 8,0 110 112 135 120 122 145 130 132 159 16,0 19,0 9,0 140 142 173 15,0 20,0 10,0 150 152 183 160 162 193 230 100 102 125 17,0 18,0 8,0 110 112 135 130 132 159 16,0 19,0 9,0 150 152 183 15,0 20,0 10,0 160 162 193 170 172 203 180 182 213 240 280 315 220 95 97 116 18,0 17,0 7,0 9,60 100 102 125 17,0 18,0 8,0 110 112 135 120 122 145 130 132 159 16,0 19,0 9,0 160 162 193 15,0 20,0 10,0 240 280 315 220 180 182 213 17 28 32 6 35 12 15,0 30,0 20,0 10,0 7 1,6 0,8 9,60 250 100 102 125 17,0 18,0 8,0 110 112 135 120 122 145 140 142 173 15,0 20,0 10,0 150 152 183 160 162 193 180 182 213 200 202 240 14,0 21,0 11,0