GR Type Coupling Diamond Elastic Cushion — Star / Plum Blossom Shock‑Absorbing Cushion (GR48) A direct replacement and performance upgrade for GRtype flexible couplings, the GR48 diamond elastic cushion is a starshaped (plum blossom) shockabsorbing insert designed to reduce vibration, cushion torque shocks, and protect connected shafts and components. Its octagonal/plumblossom geometry provides even load distribution and positive engagement while the diamond elastic compound gives resilient damping and long service life. Key benefits Reduces vibration and impact: absorbs shock loads and dampens torsional vibration to protect motors, gearboxes, reducers, and driven equipment. Protects components: cushions misalignment and transient torque spikes to reduce wear on shafts, keys, and bearings. Simple replacement and compatibility: designed for GRtype couplings and supplied as model GR48 for straightforward installation or spareparts inventory. Reliable engagement: plum blossom (star) / octagonal cushion shape ensures secure coupling under start/stop and reversing conditions. Durable elastic compound: the diamond elastic material balances flexibility with fatigue resistance for prolonged operation. Key attributes Model: GR48 (explicit model designation for correct fit in GRtype coupling hubs). Shape: Plum blossom / star design (octagonal cushion geometry) for even load distribution and positive engagement. Functionality: Elastic shock absorption, torsional damping, torque transmission, misalignment accommodation. Compatibility: Specifically made for GRtype couplings; intended as the replacement elastic element (cushion/insert) in compatible coupling hubs. Material: Diamond elastic compound (elastic polymer formulated for resilience and shock absorption). Performance: Designed to reduce transmitted vibration and absorb torque shocks while maintaining consistent torque transfer between hubs. Typical applications / use cases Motor to gearbox coupling: Install GR48 inserts between motor and gearbox hubs to reduce vibration, protect bearings, and extend component life in conveyor, pump, or fan drives. Servo/stepper and reducer connections: Use the plum blossom cushion in precision drive systems where torsional damping and protection against transient loads are required. Intermittentstart machinery: Ideal for equipment with frequent starts, stops, or reversals (packaging machines, light manufacturing equipment) where shock absorption reduces maintenance needs. Installation and maintenance notes the cushion with the same model (GR48) to ensure correct fit and performance in GRtype couplings. Inspect regularly for wear, cracking, or deformation; when signs of permanent set or damage appear. Keep spare inserts in inventory for rapid replacement to minimize downtime. What makes this product unique The combination of a plum blossom (star) profile and octagonal cushion geometry provides reliable mechanical engagement with improved load sharing across lobes. Diamond elastic compound offers a balance of flexibility and durability for sustained damping and reduced fatigue compared with standard elastomers. Purposebuilt as the GR48 spare/insert for GRtype couplings, making it an appropriate, dropin solution for maintenance and upgrades. Compatibility reminder This item is the elastic cushion (insert) for GRtype couplings and is designated GR48. Verify hub compatibility and model match before ordering to ensure proper fit and function.