Designation / Symbol :3310 2RS / 3310-2RSR / 3310 DDU / 3310 LLU / 3310 LLB / 3310 EE / 3310 2RS = 5310 2RS / 5310 LLD / 5310 EE. Type Seals: rubber seal (2RS = LLU). Bearing play/clearance:Basic. Linear ball bearings, rollers, rails, trolleys, linear guides .
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