Import 300 Series Planetary Gearbox — Buy in Bulk from Supplier in China

The 300 Series Planetary Gearbox from Ningbo Bonny Hydraulics Transmission Co., Ltd. is built as a direct replacement for the Brevini ED, ET, EQ, EM, EC and EL series, plus the Bonfiglioli 300 series. It delivers high torque output within a compact envelope, which matters for installations where axial space is restricted. The aluminium housing keeps weight down while providing the structural rigidity needed for industrial duty cycles. Precision-engineered planetary gears run with low noise and minimal backlash, critical for synchronised motion applications. The reduction ratio spans multiple stages, letting engineers match speed and torque to the driven equipment.

Standard planetary gear arrangements in this class use carburised and ground sun, planet and ring gears with case-hen hardness of 58-62 HRC, typical for industrial epicyclic drives. The aluminium alloy housing is die-cast or gravity-cast depending on frame size, then machined for bearing bores and mounting faces. Input and output shafts are generally 42CrMo4 or equivalent alloy steel, induction-hardened on bearing journals and gear teeth. Sealing is normally double-lip NBR or Viton, rated for continuous operation in ambient temperatures from -20 °C to +80 °C, with peak oil temperatures up to 90 °C. Lubrication is usually ISO VG 220 synthetic polyglycol or mineral oil, with splash or forced-feed systems depending on speed. Backlash values of 3-6 arcmin are standard for precision units in this torque class.

Buyers are typically OEMs of mobile cranes, crawler undercarriages, wind turbine yaw drives, and mining conveyor systems, plus aftermarket rebuilders of Brevini and Bonfiglioli gearboxes. The unit suits any application needing high power density with coaxial input and output shafts. Sourcing from Ningbo Bonny Hydraulics Transmission Co., Ltd. in Ningbo, Zhejiang, buyers should confirm exact reduction ratios, input flange and shaft options, and mounting orientation. Incoterms and packaging details are not stated in the source material and must be clarified directly with the supplier.

Ningbo Bonny Hydraulics Transmission Co., Ltd. is located at No 36, Dagang 3 Road, Beilun District, Ningbo, Zhejiang Province, 315800, China. The company is classified as an imported-tier supplier with a harbor trust tier. Its response rate is recorded at 0.00 percent and average response time is zero hours, which indicates that response data is either not collected or not available through this channel. Buyers should treat this as a signal to initiate direct contact early and verify communication channels before relying on email-only outreach.

The listing presents Ningbo Bonny Hydraulics Transmission Co., Ltd. as a manufacturer of planetary gearboxes focused on replacement market compatibility with established European brands. No production floor details, employee count, annual revenue, client references, or certification documentation is provided in the source material. The address places the firm in Ningbo's Beilun District, a known cluster for precision machinery and hydraulic components in China's Zhejiang Province. Buyers are advised to request factory audit reports, ISO 9001 or ISO 14001 certificates, and sample test data before committing to volume orders.