Grease-lubricated sealed high-speed angular contact ball bearings

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Higher speed is needed for main spindle systems on machining centers and hybrid machine tools in order to improve machining efficiency and surface quality of finished work pieces. To cope with this trend, The has been developing new technologies, examples of which include "ULTAGE Series precision bearings for machine tools" ) that boast advanced functionality. Two varieties include "ecological air-oil lubricated bearings for machine tools" ) dedicated to air-oil lubrication arrangement and "jet-lubricated MQCJ having inner race cooling arrangement and optimal minimum lubrication mechanism for rolling surface" ) which is a novel jet lubrication system. Incidentally, an excellent lubrication system has been more strongly needed that is suitable for improving work environment and mitigating environmental impacts. At the same time, there has been a strong need for high-speed bearing operation and longer bearing life with a grease lubrication system that can help reduce occurrence of oil mist and decrease the quantity of energy consumed by the outside device. To satisfy these needs, we have previously developed improved grease-lubricated bearing systems that include the "BNS Type sealed angular contact ball bearing (dmn 1.4×104)" and the faster BNFS Type sealed super high-speed angular contact ball bearing (dmn 1.7×104)" ). We have recently realized higher speed of dmn 1.9×104 and longer life by combining "new grease lubrication system for machine tool main spindle" ) that is a maintenance-free grease lubrication system, a sample of which was exhibited in JIMTOF 2006 in the paper titled "BNFS Type" 4) featuring optimized internal design; and new grease "SE-1". This paper describes the advantages of our new grease lubricated angular contact ball bearings and illustrates results of evaluation tests performed on them.

FAG "— 38SSTX2*" Grease-lubricated sealed high-speed angular contact ball bearings

81 mm 1,5 mm
E2.3308A-2Z 50,5 mm

BARDEN " HCB71904E.T.P4S" Grease-lubricated sealed high-speed angular contact ball bearings

800 258 mm
258 230/800YMB

FAG "107(T) 107SS(T)* " Grease-lubricated sealed high-speed angular contact ball bearings

16,52 mm CX
19138/19283 34.976x72x17.018

BARDEN 128HC Grease-lubricated sealed high-speed angular contact ball bearings

7100 r/min 30 mm
20,1 kN 23,8 mm

BARDEN 1832HC Grease-lubricated sealed high-speed angular contact ball bearings

30 mm Plain Bearings
34 mm N/A

BARDEN 1934HC Grease-lubricated sealed high-speed angular contact ball bearings

R163.00 713660110
VKBA 502 FAG

FAG 234419M.SP Grease-lubricated sealed high-speed angular contact ball bearings

0,44 34 mm
30224 215 mm

FAG 234720M.SP Grease-lubricated sealed high-speed angular contact ball bearings

150,000 320,000
SNR 150,000 mm
1/9