Changzhou Helical Gearbox
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Changzhou, Jiangsu · since 2003

Helical and bevel-helical gearboxes from 5 kW to 500 kW for mining and cement plants

Parallel-shaft, bevel-helical and planetary drives built with in-house gear grinding and case hardening, rated per AGMA 6010 service factors, with 15-day spare parts availability and a 2-year warranty.

Request a quote with your duty cycleSee torque and ratio ranges
5–500 kW
Gearbox power band
2003
Manufacturing since
15 days
Spare parts availability
2 years
Standard warranty
Helical and bevel-helical gearboxes from 5 kW to 500 kW for mining and cement plants

Products

Helical, Bevel-Helical and Planetary Gearboxes for Mining and Cement Duty

Compare torque rating, ratio range, mounting position, housing and lubrication across drives from 5 kW to 500 kW. Every unit is gear ground and case hardened in house, rated to AGMA 6010 service factors, and backed by a 15-day spare parts availability and 2-year warranty.

  1. Parallel Shaft Helical Gearbox

    Parallel Shaft Helical Gearbox

    Foot, flange or torque-arm mounted drive for conveyors, feeders and mixers from 5 kW to 90 kW.

    Rated output torque
    1,800 – 9,500 Nm
    Ratio range
    i 3.5 – 40 (single and two stage)
    Input power
    5 – 90 kW
    Mounting position
    Foot, flange, torque arm, horizontal or vertical output
    Housing / gear material
    GG25 / GG30 cast iron; case hardened gears, HB 220–260
    Gear accuracy
    AGMA 6010 Q10 / Q12
    Lubrication
    Oil splash, ISO VG 220 / VG 320; oil level sight glass
    Protection
    IP65, optional IP66 oil seal cover
    Request a quotation for this drive
  2. Bevel-Helical Gearbox

    Bevel-Helical Gearbox

    Right-angle drive up to 500 kW for inclined conveyors, mills and shaft lines needing 90° output.

    Rated output torque
    6,000 – 63,000 Nm
    Ratio range
    i 4 – 31.5, single and two stage
    Input power
    7.5 – 500 kW
    Mounting position
    Foot or flange, horizontal input with vertical output, also 180° arrangement
    Housing / gear material
    GG30 cast iron; carburised bevel and hardened helical gears
    Service factor
    1.25 – 2.0 per AGMA 6010 for shock and heavy shock loads
    Lubrication and cooling
    Forced oil circulation with external cooler option
    Protection
    IP66 housing, FKM shaft seals
    Request a quotation for this drive
  3. Planetary Gearbox for Conveyor Drive

    Planetary Gearbox for Conveyor Drive

    High ratio in-line planetary drive for belt conveyors, screeners and material handling feeders.

    Rated output torque
    1,000 – 12,000 Nm
    Ratio range
    i 10 – 100, two or three stage
    Input power
    4 – 55 kW
    Mounting position
    Flange or foot, output shaft or hollow output flange
    Housing / gear material
    GGG40 cast iron housing; nitrided and ground planetary gear set
    Lubrication
    Oil bath or grease filled, ISO VG 220, standard breather
    Shock load service factor
    1.5 – 2.5 per AGMA 6010
    Protection
    IP65
    Request a quotation for this drive
  4. Mining Conveyor Drive Unit

    Mining Conveyor Drive Unit

    Heavy-duty helical and bevel-helical conveyor drive assembly for 250 kW to 500 kW belt lines.

    Rated output torque
    25,000 – 63,000 Nm
    Ratio range
    i 12.5 – 31.5, two stage
    Input power
    250 – 500 kW
    Mounting position
    Foot or torque arm, hollow output shaft option
    Housing / gear material
    GG30 / GGG40 cast iron; gear teeth induction hardened, HB 260–300
    Gear accuracy
    AGMA 6010 Q10
    Lubrication and cooling
    Forced oil lubrication with heat exchanger, ISO VG 320
    Service factor
    1.5 – 2.0 per AGMA 6010
    Request a quotation for this drive
  5. Cement Mill Main Drive Gearbox

    Cement Mill Main Drive Gearbox

    Low-speed, high-torque bevel-helical mill drive for cement grinding and roller press duties.

    Rated output torque
    20,000 – 55,000 Nm
    Ratio range
    i 20 – 63
    Input power
    160 – 400 kW
    Mounting position
    Foot mounted, parallel or right-angle output, split housing for inspection
    Housing / gear material
    GGG40 cast iron; case hardened and ground gear set
    Lubrication and cooling
    Oil circulation with cooler or air-blast cooling, ISO VG 320
    Service factor
    1.5 – 2.0 per AGMA 6010
    Protection
    IP66, FKM seals
    Request a quotation for this drive
  6. Gearbox Spare Parts Kit

    Gearbox Spare Parts Kit

    Pre-assembled bearing, seal and shim kits for scheduled rebuilds without ordering single items.

    Kit contents
    Bearing set, rotary seals, adjusting shims, gaskets, circlips, breather
    Bearing type
    Tapered roller and deep groove ball, matched to housing bore
    Seal material
    NBR standard, FKM high-temperature option
    Lubricant supplied
    ISO VG 220 / VG 320 gear oil, 1 L per kit as standard
    Availability
    15-day spare parts availability on stocked references
    Documentation
    Assembly and setting instructions, torque values, rebuild checklist
    Warranty
    2-year warranty on parts
    Request a quotation for this drive

Full parameter tables — shaft loads, permissible radial and axial thrust, oil quantities, mounting dimensions and coupling options — are published on the

Request the full parameter tables

Standards & quality

Compliance and certification: what buyers in Australia, Indonesia and Chile check first

Our documented ratings follow the ISO 9001 quality system and AGMA 6010 service factor rating, so you can verify load capacity before a gearbox from this helical gearbox manufacturer China reaches your site. Every unit ships with rating documentation you can use for a pre-commissioning file review.

  • ISO 9001 quality system

    Manufacturing, gear grinding and case hardening run under an ISO 9001 quality management system. Inspection and test records are kept per serial number, so a replacement for a cement mill gearbox replacement order can be traced back to heat and gear batch.

  • AGMA 6010 service factor rating

    Service factors and load ratings are stated per AGMA 6010, including the assumed operating hours, starts per hour, shock load class and ambient conditions. A service factor of 1.25 to 1.50 is standard for steady conveyor duty; use 1.75 or higher for a heavy shock class with frequent reversals or a sticky mill load.

  • Torque and ratio documentation

    Each model lists nominal output torque, ratio range, allowable momentary and operating torque, and the parallel shaft helical gearbox ratio range available for that frame size, so selection can be checked against motor power and drum speed.

  • Lubrication and cooling data

    Oil type, fill volume, and cooling requirement are documented for each housing position and oil bath level. For the planetary gearbox for conveyor drive variants, mount position changes the fill volume, and the figures are given per orientation.

  • Site inspection file

    On request we supply dimension drawings, mounting position options, shaft and flange data, bearing and seal designations, and the recommended spare parts kit bearings seals list, with the gearbox spare parts kit bearings seals line items and quantities shown for a 15-day availability plan.

  • Warranty and service

    Two-year warranty on the gearbox housing, gears and bearings under stated operating conditions, with wear items and lubricants excluded. Serial numbers, test reports and paint batch data are supplied with the unit for maintenance file records.

Capabilities

Why buyers specify Changzhou Helical Gearbox

Selection rests on documented gear quality, AGMA 6010 service factors and stocked spares you can verify before the PO is placed.

In-house gear grinding

Helical and bevel-helical sets are ground and shaved in-house, holding profile and lead accuracy to AGMA 6010.

Case-hardened gear flanks

Case hardening to HB 58–62 on gear flanks supports mining conveyor duty with a 2-year warranty.

Documented service factors

Each quote states the AGMA 6010 service factor, gearbox rating and motor power for your duty cycle.

5–500 kW power band

Parallel shaft helical, bevel-helical and planetary drives from 5 kW to 500 kW, ratios 5:1 to 100:1.

Dimensional inspection

In-process dimensional checks on housing bore, centre distance and shaft runout, logged per serial number.

Spares in 15 days

Bearing, seal and key kits for cement mill and conveyor replacements are stocked and shipped within 15 days.

Capacity & lead time

Capacity and delivery: gearbox lead time, MOQ and packing

Standard helical and bevel-helical units leave the works in 30–45 days, with a minimum order of one gearbox per model for replacement and trial orders. Two assembly halls in Changzhou handle standard parallel shaft helical, bevel-helical and planetary conveyor drives, with in-house gear grinding and case hardening.

Standard unit lead time
30–45 days for standard parallel shaft helical and bevel-helical gearboxes from
Spare parts availability
15 days for bearings, seals, keys, coupling elements and oil seals held as
Minimum order quantity
1 unit per model for replacement and trial orders;
Monthly assembly capacity
approx. 150–200 gearboxes per month across two assembly halls;
Spare parts kit scope
Bearing set, shaft seals and O-rings, adjusting shims, keys and locking
Packing method
Each gearbox crated individually, machine-fixed on the base plate, shaft and
Loading and shipping
20 ft and 40 ft container, seaworthy or wooden crate per customer instruction;
Documentation
Packing list, commercial invoice, certificate of origin and the gearbox

Process

From RFQ to Shipment: How Your Gearbox Order Moves

  1. 1. RFQ Capture: Duty Cycle and Motor Power

    Send application, motor kW, service factor per AGMA 6010, ratio and mounting; you get a technical reply within 2 working days.

  2. 2. Model Selection and Drawing Confirmation

    We size the parallel shaft helical or bevel-helical unit, 5 kW to 500 kW, and return a GA drawing with ratio, mounting position and oil volume.

  3. 3. Quotation, Lead Time and Spare Parts Kit

    You receive itemised pricing, 15-day spares availability, bearings and seals kit options, and a production lead time in writing.

  4. 4. Inspection Plan and Third-Party Witness

    Before assembly we agree the inspection plan: gear grinding, case hardening depth, AGMA rating check; third-party witness is welcome.

  5. 5. Production and Surface Treatment

    In-house gear grinding and case hardening on two assembly halls, with paint and packing to mining or cement site conditions.

  6. 6. Shipping Documents and After-Sales Support

    You get B/L, packing list, manual and spare parts list on dispatch, plus 2-year warranty and 15-day spares despatch for Australia, Indonesia and Chile.

FAQ

Before You Order: Industrial Gearbox Service Factor, Lead Times and Spare Parts Availability

Another question? Talk to the engineering team
How do I pick the service factor for a mining conveyor drive?

We rate to AGMA 6010 service factor, typically 1.25–1.5 for continuous conveyors with shock load, 1.75–2.0 for crushers, mixers and mills. Send peak torque, starting torque and duty hours so we can confirm the rating in writing.

What should an RFQ include so you can quote a helical gearbox accurately?

Give motor power in kW (5–500 kW range), output torque, overall ratio, mounting position (foot, flange, or top), shaft arrangement, duty cycle and ambient conditions. Add drum diameter, belt mass and shock load for conveyor duty.

Do you build bevel-helical units over 500 kW and where do they fit?

Bevel-helical units run 30–500 kW and 6–150 ratios where the drive axis must be offset. Below 5 kW we suggest a parallel shaft helical gearbox or a planetary gearbox for conveyor drive applications.

How long does a sample or first article unit take?

Sample and first-article units ship in 30–45 days after drawing approval; series production follows the same window from receipt of the deposit. Gear grinding, case hardening and assembly all happen in-house.

What inspection and shipping documents accompany the goods?

Each unit ships with dimensional inspection report, material and hardness records, gear tooth inspection data and packing list; third-party inspection by SGS, Bureau Veritas or TÜV is welcome. Export documents include commercial invoice, packing list and bill of lading.

What does the warranty cover and how fast are spare parts?

Two-year warranty on gears, shafts and housing against material and workmanship defects; bearings and seals are excluded as consumables. Bearing, seal and shim kits for most models are available within 15 days.

Send your motor power, ratio and duty cycle

Our selection team returns a sized gearbox with rated torque, service factor, mounting position, lubricant recommendation and confirmed lead time.

Request a quote