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{"title":"Heavy Duty Casters 4" Rigid Caster Single Polyurethane (PU) Casters Ball Wheel","imgUrl":"https:\/\/img.ismap.com\/nimg\/df\/87\/b489f621634c202ec2d9b2693c6e-200x200-1\/heavy_duty_casters_4_22_rigid_caster_single_polyurethane_28pu_29_casters_ball_wheel_with_bearing_for_industrial_use.jpg","attrs":{"Brand Name":"Luma","Model Number":"A1-H4-G","Place of Origin":"China","Minimum Order Quantity":"4"}}
{"title":"Heavy Duty Industrial Spring Castor Wheel PU Polyurethane 6 inches Caster Wheels","imgUrl":"https:\/\/img.ismap.com\/nimg\/72\/c6\/d6a6e0432e52b4c164ae60387dba-200x200-1\/heavy_duty_industrial_spring_castor_wheel_pu_polyurethane_6_inches_caster_wheels_office_and_institutional_settings.jpg","attrs":{"Brand Name":"Luma","Model Number":"A01-T-1KU-650 \/A01-S-1KU-650 \/ A01-R-1KU-650","Place of Origin":"Zhongshan Guandong province China","Minimum Order Quantity":"4"}}
{"title":"Superior Floor Protection Industrial heavy duty Load-Bearing TPR rubber core","imgUrl":"https:\/\/img.ismap.com\/nimg\/34\/55\/6848e349e65e6d85e66d6bdcde02-200x200-1\/superior_floor_protection_industrial_heavy_duty_load_bearing_tpr_rubber_core_casters_singel_4_22_braking_c2_a0rigid_swivel_food_se.jpg","attrs":{"Brand Name":"Luma","Model Number":"BO1-H-1PU-450 \/ BO1-B-1PU-450 \/ BO1-S-1PU-450 BO1-R-1PU-450","Place of Origin":"Zhongshan Guandong province China","Minimum Order Quantity":"4"}}
{"title":"Shock Absorber Heavy Duty Industrial PU Dual Spring Load Bearing Wheels Iron","imgUrl":"https:\/\/img.ismap.com\/nimg\/ee\/36\/94a3249f99c8e12f49953128a3ee-200x200-1\/shock_absorber_heavy_duty_industrial_pu_dual_spring_load_bearing_wheels_iron_core_singel_castors_6_22_harbor_freight_tools_casters.jpg","attrs":{"Brand Name":"Luma","Model Number":"A01-T-1KU-650 \/ A01-S-1KU-650 \/ A01-R-1KU-650","Place of Origin":"Zhongshan Guandong province China","Minimum Order Quantity":"4"}}
{"title":"Wear-resistant Heavy Duty Industrial PU Casters Dual Spring Load-Bearing Wheels","imgUrl":"https:\/\/img.ismap.com\/nimg\/f7\/3d\/174eba95675ed33f0a255e0da8c8-200x200-1\/wear_resistant_heavy_duty_industrial_pu_casters_dual_spring_load_bearing_wheels_iron_core_singel_castors_5_22_harbor_freight_tools.jpg","attrs":{"Brand Name":"Luma","Model Number":"A01-T-1KU-550 \/A01-S-1KU-550 \/ A01-R-1KU-550","Place of Origin":"Zhongshan Guandong province China","Minimum Order Quantity":"4"}}
Industrial Heavy-Duty Shock Absorbing Casters Spring PU Polyurethane 4 Inches Swivel Castor Wheels For Heavy Machinery
Steel wheels with iron core PU wheel 4" designed to meet large equipment and warehouse transportation needs.
Premium Shock Absorption Technology
Luma Industrial Heavy-Duty Dual Spring Shock-Absorbing Steel Core Polyurethane 4" Single Wheel with Brake Swivel Durable Castor. Optimized for precision handling, heavy loads, and demanding industrial environments.
Key Features of Shock Absorbing Casters
Shock absorbing casters are engineered to mitigate vibrations and impacts during movement, protecting both equipment and floors.
Dual-Stage Shock Absorption: Combines springs and rubber elements to absorb minor vibrations and major shocks effectively
Robust Material Selection: Wheels made of elastic polyurethane offering excellent wear resistance and noise reduction
Optimized Structural Design: Features micro-arc wheel profiles for smooth rotation and consistent ground contact
Product Specifications
Load capacity
250KG
Types
Swivel, Rigid, Locking swivel
Wheel Center
Steel
Hardness
95-97
Wheel material
Polyurethane
Color
Red/white
Bracket & Plate
5mm
MOQ
4 pcs
Bracket width
63mm
Steel Plate
Hot Rolled Steel
Surface Treatment
Electroplating
Model
A2-H4-G
Matching Specifications
Set 1: 2 brakes + 2 fixed
Set 2: 2 swivel + 2 fixed
Essential for Port Operations
For port freight applications, a spring-dampened caster is not just an option—it's a recommended standard for operational excellence.
Shock Absorption: Absorbs vibrations and impacts when moving over dock gaps, rails, or rough pavement
Equipment Protection: Minimizes shock transmission to extend equipment lifespan
Industrial Applications
Medical Facilities
Used with hospital beds, mobile workstations, and lab carts to ensure quiet, stable movement and prevent damage to sensitive instruments.
Logistics & Warehousing
Applied to AGVs and medium-duty trolleys to maintain stability on uneven floors and reduce product shock during transport.
Industrial Manufacturing
Ideal for assembly line equipment, packaging machinery, and automotive tools where heavy loads and floor protection are priorities.
