for new t echnology network r corporation bearing units plastic housing series #
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the ntn plastic series ensures a clean operating environment 1 features guards against corrosion maintains a clean operating environment low torque characteristics light weight water resistant ntn bearing units in the plastic series feature ball bearings inserted into housings made of plastics that provide superior resistance to corrosion as compared to standard series cast iron units this series is especially useful in a wide variety of applications because of the nonmagnetic and rust free properties of the housing the solid grease lubricant in the ball bearing solely developed by ntn reduces ntn leakage from the bearing significantly reducing environmental pollution also the housing will not stain nor is there paint to peel and contaminate the environment the standard solid grease type for these ball bearing units is spot-pack which places the lubricant on the bearing cage torque consumption capabilities of spot-pack bearings is low due to reduced whip resistance in comparison to sta
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recommended tightening torque for set screw unit n m/lbf inch bearing number f-uc 204 205 206 207 208 designnation of set screws w shape screw head metric series m5 m6 m6 m8 0.8 0.75 0.75 1 inch series no.10-32unf 1/4-28unf 1/4-28unf 5/16-24unf tightening torques max n m 3.9 4.9 5.8 7.8 lbf inch 34 43 52 69 tighten the two set screws uniformly using the torque listed in this table over tightening the set screw may cause the inner ring to crack recommended tightening torque for setting bolt unit n m/lbf inch housing number pr204d1 pr205d1 pr206d1 pr207d1 pr208d1 flr204d1 flr205d1 flr206d1 flr207d1 flr208d1 m12 7/16 m10 3/8 m12 7/16 nominal bolt dia metric series m10 inch series 3/8 tightening torques max n m 17.7 24.5 29.4 35.3 45.1 17.7 24.5 29.4 35.3 40.2 lbf inch 156 217 260 312 399 156 217 260 312 356 over tightening the setting bolt may deform the plastic housing use the tightening torque guideline listed in this table ntn recommends the use of a washer between the bolt and housin
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dimensions for dust cover unit mm inch cover number rm-204 rm-205 rm-206 rm-207 rm-208 36 41 50 60 68 l d1 1 32 1 8 1 32 2 8 2 16 dimensions d2 50 55 64 74 84 1 32 2 32 2 32 2 16 3 16 29.5 31.0 35.0 38.0 40.0 l 1 32 1 32 1 8 1 2 1 16 1.2 0.05 inches d2 d1 cover w ater and chemical resistance of housing valox 420 ® among engineering plastics valox has better water absorption characteristics 0.06 at 23 over 24 hours and better dimensional stability valox is made of crystallized polymer and while not affected by organic solvents is affected by alkaline making it important to consider the operating environment the table demonstrates valox s chemical resistance when soaked in solvent at 30 or 90 days 1 1 chemicals hydrochloric acid 10 acid sulfuric acid 36 deterioration ratio temperature number of days soaked 30 days 23 23 60 23 23 23 23 23 23 23 60 96 100 100 100 93 87 100 100 100 90 89 97 84 88 88 chemicals ethyl alcohol methyl alcohol isopropyl alcohol acetone methyl ethyl
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pillow type bearing unit f-ucpr2 series cylindrical bore set screw type shaft dia mm inch 20 4 25 16 8 16 1 30 1 16 1 8 1 16 1 4 35 1 4 1 16 1 8 1 16 nominal dimensions unit number hlja mm inch bolt size h1 h2 b s bearing number housing number mass of unit ref stainless bearing with solid grease glass fiber reinforced plastic housing n 11 16 11 16 n1 14 16 14 16 kg lb 0.3 0.7 0.3 b f-ucpr204/lp03 33.3 127 f-ucpr204-012/lp03 1 16 5 f-ucpr205/lp03 36.5 140 f-ucpr205-013/lp03 f-ucpr205-014/lp03 1 16 5 2 f-ucpr205-015/lp03 f-ucpr205-100/lp03 95 38 3 4 1 2 105 4 8 38 1 2 14.2 65 31 12.7 m10 f-uc204d1/lp03 pr204d1 16 2 16 1.2205 0.500 8 f-uc204-012d1/lp03 pr204d1 14.5 m10 f-uc205d1/lp03 pr205d1 f-uc205-013d1/lp03 f-uc205-014d1/lp03 16 2 32 1.3425 0.563 8 pr205d1 f-uc205-015d1/lp03 f-uc205-100d1/lp03 83 38.1 15.9 71 34.1 14.3 0.7 12 0° s f-ucpr206/lp03 42.9 162 119 46 14 f-ucpr206-101/lp03 f-ucpr206-102/lp03 1 16 6 8 4 16 1 16 16 f-ucpr206-103/lp03 f-ucpr206-1
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pillow type bearing unit f-rm-ucpr2 series cylindrical bore set screw type shaft dia mm inch 20 4 25 16 8 16 1 30 1 16 1 8 1 16 1 4 35 1 4 1 16 1 8 1 16 nominal dimensions unit number hlja mm inch bolt size a1 b s bearing number housing number mass of unit ref stainless bearing with solid grease glass fiber reinforced plastic housing n 11 16 11 16 n1 h1 h2 kg lb 0.3 0.7 0.3 0.7 b s f-rm-ucpr204/lp03 33.3 127 95 38 f-rm-ucpr204-012/lp03 1 16 5 3 4 1 2 f-rm-ucpr205/lp03 36.5 140 105 38 f-rm-ucpr205-013/lp03 f-rm-ucpr205-014/lp03 1 16 5 2 4 8 1 2 f-rm-ucpr205-015/lp03 f-rm-ucpr205-100/lp03 14 14.2 65 39 31 12.7 m10 f-uc204d1/lp03 pr204d1 16 16 2 16 1 32 1.2205 0.500 8 f-uc204-012d1/lp03 pr204d1 14 14.5 71 16 40 34.1 14.3 m10 f-uc205d1/lp03 pr205d1 f-uc205-013d1/lp03 f-uc205-014d1/lp03 16 2 32 1 16 1.3425 0.563 8 pr205d1 f-uc205-015d1/lp03 f-uc205-100d1/lp03 f-rm-ucpr206/lp03 42.9 162 119 46 14 f-rm-ucpr206-101/lp03 f-rm-ucpr206-102/lp03 1 16 6 8 4 16 1 16
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stainless insert bearing cylindrical bore set screw type with solid grease c g ds solid grease rsddd4 s b s1 grease fill plan spot-pack type is standard shaft dia mm inch 20 4 25 16 8 16 1 30 1 16 1 8 1 16 1 4 35 1 4 1 16 1 8 1 16 40 1 2 1 16 nominal dimensions bearing number d f-uc204d1/lp03 f-uc204-012d1/lp03 f-uc205d1/lp03 f-uc205-013d1/lp03 f-uc205-014d1/lp03 f-uc205-015d1/lp03 f-uc205-100d1/lp03 f-uc206d1/lp03 f-uc206-101d1/lp03 f-uc206-102d1/lp03 f-uc206-103d1/lp03 f-uc206-104d1/lp03 f-uc207d1/lp03 f-uc207-104d1/lp03 f-uc207-105d1/lp03 f-uc207-106d1/lp03 f-uc207-107d1/lp03 f-uc208d1/lp03 f-uc208-108d1/lp03 f-uc208-109d1/lp03 mm inch basic load rating n dynamic lbf static mass ref d b c rs min 1 0.039 1 0.039 s 12.7 0.500 14.3 0.563 s1 18.3 0.720 19.8 0.780 g ds d4 kg lb 0.17 0.39 0.20 0.53 0.51 0.46 0.44 0.33 0.82 0.77 0.73 0.66 0.49 1.21 1.15 1.08 1.01 0.65 1.52 1.46 cr 9 900 2 220 10 800 2 430 cor 6 650 1 500 7 850 1 770 20 47 31 17 0.7500 1.8504 1.2205 0.6693 25 5
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