Designation / Symbol :3309 2RS / 3309-2RSR / 3309 DDU / 3309 LLU / 3309 LLB / 3309 EE / 3309 2RS = 5309 2RS / 5309 LLD / 5309 EE. Type Seals: rubber seal (2RS = LLU). Bearing play/clearance:Basic. Linear ball bearings, rollers, rails, trolleys, linear guides .
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