Boston Gear (Altra) B812-9 Plain Sleeve & Flanged BearingsSpecification
| Classification | Organic Fertilizer | Type | Liquid fertilizer | Place of Origin | Jiangsu, China |
| Release Type | Quick | State | Liquid | Application | Crops |
| Appearance | Dark Brown Liquid | Calcium | ≥ 50g/L | Magnesium (EDTA) | ≥ 50g/L |
| Humic Acid | ≥ 70g/L | Amino Acid (Polypeptide) | ≥ 100g/L | Organic Matter | ≥ 210g/L |
| NPK | ≥ 100g/L | Compound TE | ≥ 20g/L | Oligosaccharide | Appropriate amount |
| PH | 4.5~5.0 |
| Grease Speed Rating n1 | 30000 rpm |
| Fillet Radius ra | 0.30 mm |
| D | 22.0000 mm |
| d | 7.000 mm |
| Oil Speed Rating n2 | 36000 rpm |
| Basic Dynamic Radial Load Rating C | 2650 N |
| Basic Static Radial Load Rating Co | 560 N |
| B | 7.00 mm |
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Grease Speed Rating n1:15000 rpm; B:15.9 mm; Accessories:One Seal; Basic Dynamic Radial Load Rating C:10400 N; d:12.000 mm; Basic Static Radial Load Rating Co:5600 N; Fillet Radius ra:0.64 mm; Sealed Speed Rating n3:15000 rpm; D:32.0000 mm; Oil Speed Rating n2:20000 rpm;
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Limiting speed:750 r/min; B:218 mm; rb max.:3 mm; Basic static load rating C0:6550 kN; Da max.:443 mm; r1,2 min.:4 mm; d:300 mm; D:460 mm; ra max.:3 mm; Calculation factor kr:0.5;
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G:M 56x4; d:70 mm; d4 ≈:92 mm; Basic static load rating C0:530 kN; Material constant KM:330; l5 ≈:40 mm; Specific dynamic load factor K:100 N/mm²; C1 max.:43 mm; α:6 °; B:49 mm;
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Oil Speed Rating Open/Shielded n2:3200 rpm; B:35.00 mm; Grease Speed Rating Open/Shielded n1:2600 rpm; Accessories:Without Accessories; D:225.0000 mm; Basic Dynamic Radial Load Rating C:125000 N; Fillet Radius ra:2.00 mm; d:150.000 mm; Basic Static Radial Load Rating Co:125000 N; Sealed Speed Rating
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Preload class B GB:220 N; Da max.:70.4 mm; d1:54.2 mm; Calculation factor f2D:1.09; Calculation factor fHC:1; r1,2 min.:1 mm; Calculation factor f0:15.1; Db max.:73 mm; Basic dynamic load rating C:28.6 kN; Attainable speed for grease lubrication:19000 r/min;
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d5:114 mm; Grub (set) / Locking screw size:M 6; Recommended tightening torque:14.2 N·m; Mass:1.2 kg; G:M 85x2; b:10 mm; d3:115 mm; B:32 mm; h:4 mm; d1:110 mm;
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d:460 mm; with cylindrical bore:160 min-1; Grease:15530 kN; Dynamic (Cr):12 mm; rs (min):7.5 mm; with tapered bore:200 min-1; Static (Cor):22.3 mm; Pu:7370 kN; D:760 mm; Oil:1090.320 kN;
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Basic dynamic load rating C:104 kN; B:59.531 mm; s:29.766 mm; H2:33.337 mm; J max.:180.975 mm; Limiting speed:4100 r/min; H:114.3 mm; L:225.425 mm; Attachment bolt diameter G:15.875 mm; Mass bearing unit:4.76 kg;
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Mass needle roller and cage assembly:0.018 kg; Limiting speed:18000 r/min; Ew:30 mm; U:20 mm; Basic static load rating C0:36.5 kN; Reference speed:16000 r/min; Fw:25 mm; Basic dynamic load rating C:20.9 kN; Fatigue load limit Pu:4.4 kN;
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Grease Speed Rating Open/Shielded n1:4100 rpm; Basic Static Radial Load Rating Co:90000 N; B:33.00 mm; d:55.000 mm; D:140.0000 mm; Basic Dynamic Radial Load Rating C:108000 N; Accessories:One Shield; Fillet Radius ra:2.00 mm; Oil Speed Rating Open/Shielded n2:5000 rpm;
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Mass needle roller:0.77 g; r1 max.:0.6 mm; r2 max.:0.8 mm; Dw:3 mm; r1,2 min.:0.2 mm; Lw:13.8 mm;
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d:320 mm; Calculation factor Y1:1.5; Calculation factor Y2:2.2; r5 min.:1.5 mm; Basic dynamic load rating C:2852 kN; K:6 mm; l:20.55 mm; Calculation factor e:0.46; db min.:342 mm; C:168 mm;
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D:68 mm; Mass bearing:0.29 kg; C1:3.5 mm; Calculation factor Y0:0.9; Fatigue load limit Pu:7.65 kN; C:14.5 mm; r1,2 min.:1 mm; da max.:46 mm; B:19 mm; Basic dynamic load rating C:64.7 kN;
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Coefficient of friction µ max.:0.2; Permissible sliding velocity v min.:0 m/s; Mass strip:0.47 kg; L:500 mm; H:1.5 mm; Coefficient of friction µ min.:0.02; Specific static load factor K0:250 N/mm²; B:100 mm; Specific dynamic load factor K:120 N/mm²; Permissible sliding velocity
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Basic Static Radial Load Rating Co:465000 N; Fillet Radius rb:1.00 mm; Basic Dynamic Radial Load Rating C:336000 N; Grease Speed Rating n1:1700 rpm; D:350.0000 mm; B:51.00 mm; Oil Speed Rating n2:2100 rpm; Fillet Radius ra:2.50 mm; d:220.000 mm;
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| CompareBoston Gear (Altra) B812-9 Plain Sleeve & Flanged Bearings |
| C | R | D | S | B | J | T | d |
| PCMF 161812 E | - | - | 18 mm | - | 12 mm | - | - | 16 mm |
| BRI 61812 | 18,9 kN | - | 28,575 mm | 0,3 mm | 19,3 mm | - | - | 9,525 mm |
| 81206 | - | - | 52,000 mm | - | 4.25 mm | - | 16,000 mm | 30,000 mm |
| 81208 | - | - | 68,000 mm | - | - | - | 19,000 mm | 40,000 mm |
| 81212 | - | - | 95,000 mm | - | - | - | 26,000 mm | 60,000 mm |
| 81216 | - | - | 115,000 mm | - | - | - | 28,000 mm | 80,000 mm |
| 581229B | 18 mm | - | 65 mm | - | 18 mm | - | - | 25 mm |
| 281152X/281254XC | 47,62 mm | 7 mm | 254 mm | - | 74 mm | 265,1 mm | 66,67 mm | 152,4 mm |
| B812-9 | - | - | 0.753 Inch | 19.126 Millimeter | - | - | - | - | 0.503 Inch | 12.776 Millimeter |
| B812-9 | - | - | 3/4 in | - | - | - | - | 1/2 in |
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BEARING-SINGAPORE (PTE)LTD.2020-07-10 09:46:19
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