Common FAQs for Tunnel Kiln Car (Wheel and Bearing Assembly Issues)

Q1: What are the effects of substandard kiln car wheel quality?
If the wheels are not quenched, have insufficient surface hardness, or a shallow hardened layer (standard optimum: 3–5 mm), they will experience rapid wear and tread deformation, causing the kiln car to deviate and run unevenly. This disrupts the geometric dimensions inside the kiln and adversely affects firing quality.

Q2: What are the drawbacks of incorrect bearing selection?
f the bearing clearance is too small or the model does not match, it will increase running friction resistance, causing the pusher to overload and the car to move sluggishly. It also accelerates track wear. Over long‑term operation, it will alter the track accuracy inside the kiln and compromise the stability of the entire production line.

Q3: Why can't kiln cars be assembled casually on the site track?
Kiln cars must be precisely assembled and adjusted on a dedicated fixture table, with strict control over overall dimensions, axle concentricity, and multi‑wheel parallelism. Casual on‑site assembly can easily cause dimensional errors, axis misalignment, and inadequate flatness. After assembly, a no‑load trial run is required to verify dimensions, so as to prevent future operational failures.