Headquartered in Liaocheng, China's core bearing industrial hub, SIFT TRADING delivers high-durability industrial bearings to over 50 countries worldwide.
SIFT TRADING is a specialized manufacturer and international trade company focused on industrial rolling bearings and mounted units. Located in Liaocheng City, Shandong Province, we leverage the region's complete industrial supply chain, advanced CNC heat treatment lines, and precision grinding technology.
In addition to our proprietary SIFT brand, we maintain deep strategic partnerships and official distribution capabilities for top Chinese industrial brands including ZWZ, LYC, and RQK, ensuring our customers get verified quality with unbeatable lead times and pricing.
We provide tiered solutions tailored to your specific application, budget, and performance criteria:
High-speed, low noise (Z2V2 / Z3V3), optimal cost-efficiency for motors, gearboxes, and agricultural machinery.
Premium tier for heavy metallurgy, mining mills, railway, and wind energy applications.
China's historic benchmark for large spherical rollers, cylindrical rollers, and precision engineering.
High volume, highly competitive wholesale solutions for replacement markets and aftermarket distributors.
From vacuum-degassed chrome steel (GCr15) to automated noise & vibration testing.
100% spectral analysis and ultrasonic flaw detection on GCr15 / 52100 high carbon chrome steel bars and forged rings.
Multi-station automated CNC raceway grinding and superfinishing lines guaranteeing micron-level circularity and roughness (Ra ≤ 0.05μm).
Every batch passes automated BVT vibration testers and radial clearance gauges to ensure standard C0, C3, or C4 radial play.
Ultrasonic ultrasonic cleaning, high-grade anti-rust oil immersion, individual VCI anti-moisture bag packing, and seaworthy cartons.
Ensuring every bearing meets ABEC-1 (P0) to ABEC-5 (P5) standards.
Evaluates decibel levels and internal friction under high speed (Z1V1, Z2V2, Z3V3).
High-accuracy profilometers measuring raceway contour, form deviation, and taper angles.
Rigorous testing ensuring Rockwell hardness strictly within HRC 60 - 64.
Precision pneumatic measurement ensuring radial and axial internal clearance matching specs.
Evaluates heat-treatment micro-structure, carbide uniformity, and retained austenite.
Tests anti-corrosion and anti-rust capability of oils, packaging, and stainless bearings.
Whether you need standard Deep Groove Ball Bearings, heavy Tapered/Spherical units, or specific brand quotations (SIFT, ZWZ, LYC, RQK), we are ready to serve.