GTP Series Planetary Gear Reducer – 22 to 2600 kNm, Modular Design for Industrial Drives

◆GTP Series industrial planetary units span 27 frame sizes and deliver nominal torques from 22 kilonewton meters to 2,600 kilonewton meters with ratios between 25 and 4000. Single stage efficiency exceeds 90 percent. How it works: input torque divides across multiple planet gears meshing within a stationary annulus gear, multiplying output force while distributing contact stress evenly. Horizontal, vertical, and torque arm mounting configurations support coaxial, bevel, or helical input stages. Output options include solid shaft with key, solid shaft with involute spline, hollow shaft with shrink disc, and hollow shaft with involute spline. Applications cover large conveyor drives, cement and mining mills, bucket wheel excavators, hoisting gear, and heavy duty agitators.

▼Key Features

• ★ Modular design covering 27 frame sizes (09–36)

• ★ Rated output torque: 22–2600 kNm

• ★ Gear ratios: 25–4000 (can be combined with R/K/S Series for higher ratios)

• ★ Input types: coaxial, bevel gear, helical gear, bevel‑helical gear

• ★ Output types: hollow shaft with shrink disc, hollow shaft with involute spline, solid shaft with key, solid shaft with involute spline

• ★ Mounting options: horizontal, vertical, torque arm

• ★ Standard ambient temperature: –10°C to +40°C, altitude up to 1000 m

• ★ Lubrication: dip lubrication (standard); forced lubrication available for special cases

▼Specifications

▼HelmeDrive Gearboxes Exporting-GTP Series Planetary Gearbox

▼GTP Series Heavy Duty Planetary Gearbox Typical Industrial Applications

�FAQ

Q 1: How do I ensure I’m not overspending on a planetary gearbox for my crusher or conveyor, while also avoiding premature failures from extreme shock loads and 24/7 operation?

A:

Oversizing wastes capital. Undersizing kills gearboxes – and your production line. The right size sits in the middle. HelmeDrive's GTP series gives you a systematic way to find it.

What drives your total cost – and how to control it:

The 5-step selection process that protects your investment:

1. Calculate your ratio– i = n₁ / n₂ (example: 1500 rpm motor, 31 rpm output → ratio 50)

2. Determine required power with service factors– P_C = P₂ × f₁ × f₂ × S_f (example: 82 kW conveyor with heavy shock → 149 kW required)

3. Pick from GTP rating tables– choose where P_N ≥ P_C. HelmeDrive GTP covers 22 to 2,600 kNm output torque across 27 sizes.

4. Verify peak torque– ensure starting/braking torque doesn't exceed GTP's impact-resistant design

5. Check thermal limits– for ambient >40°C or dusty conditions, add forced lubrication with cooling

Example – conveyor purchase in Indonesia:

A coal mine in Kalimantan, Indonesia, was about to buy oversized planetary gearboxes “just to be safe.” HelmeDrive ran the selection with their actual load data. The correctly sized GTP units saved them 18% on initial purchase cost and have run for three years without failure. The procurement manager said: “We stopped guessing. Now we size with data.”

Send us your motor speed, output speed, load type, and operating hours. We will recommend the exact GTP size – no oversizing, no undersizing.

Q 2: In a dusty, high-temperature mine environment (24/7 operation), what real-world advantages does HelmeDrive's GTP planetary gearbox offer over ordinary planetary gearboxes?

A:

Ordinary planetary gearboxes can work in a clean factory. Mines are not clean factories. HelmeDrive's GTP series is engineered specifically for the dust, heat, and shock that kill ordinary units.

What ordinary planetary gearboxes fail to tell you – and what GTP delivers:

How GTP protects your uptime:

· Thermal power verification:Calculate P_G = P_G1 × f₄ × f₁₄. If P₂ > P_G, we recommend forced lubrication with cooling – no guessing, no overheating.

· Lubrication that fits your duty:Oil bath splash for standard duty. Forced circulation with cooler for high‑power continuous operation.

Example – copper mine conveyor in Chile:

A copper mine in Antofagasta, Chile, compared HelmeDrive GTP with two other planetary brands for their overland conveyor. The other brands could not provide thermal power data for 45°C ambient. HelmeDrive delivered complete thermal tables. The mine chose GTP and has run for four years with only scheduled oil changes. The maintenance manager said: “The other brands couldn’t tell us if their gearboxes would survive the heat. HelmeDrive gave us numbers we could trust.”

Running in a hot, dusty environment? Send us your ambient temperature, duty cycle, and dust severity. We will provide a thermal check and recommend the right sealing option.

Q 3: What is the real total cost of ownership of HelmeDrive's GTP planetary gearbox under heavy shock loads, and can you provide field examples that prove its long-term value?

A:

Purchase price is only the first line of total cost. A gearbox that fails every two years costs more than one that runs for a decade. HelmeDrive's GTP series is built for the long haul.

What TCO looks like for a heavy‑duty planetary gearbox:

Field examples – real service life in heavy applications:

What extends GTP service life:

· Correct service factor (S_f ≥ 1.4 for critical applications)

· Proper thermal management (forced lubrication with cooling for continuous high power)

· Regular oil analysis and scheduled maintenance

· Correct mounting (horizontal, vertical, or torque arm)

Example – crusher drive in South Africa:

A platinum mine in Rustenburg, South Africa, replaced a competitor’s planetary gearbox every 18 months on their primary crusher. The application had extreme shock loads. They installed a HelmeDrive GTP series gearbox. After three years, the GTP is still running with no gear or bearing failures. The plant manager said: “We spent more upfront, but we’ve saved three change‑outs and weeks of downtime. The GTP has paid for itself twice over.”

Planning a heavy‑duty purchase? Send us your load profile, duty cycle, and shock load severity. We will provide a TCO comparison and service life estimate based on field data.

📬shawn.zhu@helmedrive.com

GTP Series Planetary Gear Speed Reducer – Application-Based Selection Guide

◆When selecting a planetary gear speed reducer for heavy industrial applications, it is essential to consider not only power and speed but also the unique demands of continuous operation, high torque density, extreme shock loads, and compact installation requirements. Below is a practical selection guide based on real-world applications of the HelmeDrive GTP Series Planetary Gear Speed Reducer—built on real-world data, so you can choose with confidence.

◆The HelmeDrive GTP Series is a heavy-duty planetary gear reducer designed for the most demanding industrial environments. It features a highly modular design with 27 frame sizes from 09 to 36, covering a nominal output torque range from 22 kN·m to 2,600 kN·m and speed ratios from 25:1 to 4,000:1. The series can be combined with R, K, and S series reducers to achieve even higher ratios. Multiple input types (coaxial, bevel gear, helical gear, bevel-helical) and output types (hollow shaft with shrink disc, hollow shaft with involute spline, solid shaft with key, solid shaft with involute spline) are available, along with horizontal, vertical, and torque arm mounting options.

▼Product Overview

Note: Torque values are nominal ratings; for exact data consult HelmeDrive engineering.

▼Application Areas (Derived from Driven Machine Classifications)

The table below summarizes key application sectors and typical machinery types where GTP Series reducers excel, based on industry-standard load classification.

1. Mining & Cement Industry Applications

Common Pain Points:

n Extreme shock loads from crushers and mills

n Abrasive dust causing wear and seal failure

n High ambient temperatures in kiln areas

n Continuous 24/7 operation with high torque requirements

Selection Recommendations:

2. Cranes & Heavy Lifting Applications

Common Pain Points:

n High starting torque under load

n Safety requirements for load holding

n Shock loads during acceleration/braking

n Space constraints in crane machinery houses

Selection Recommendations:

3. Heavy Conveying & Material Handling Applications

Common Pain Points:

n High radial loads from pulleys and drums

n Continuous operation in dusty outdoor environments

n Need for reliable sealing against material spillage

n Long distances requiring multiple drives

Selection Recommendations:

4. Vertical Mixer & Agitator Applications

Common Pain Points:

n Motor mounted above tank for hygiene or space reasons

n Need for right-angle drive to access vertical shaft

n Corrosive environment in chemical or food processing

n Potential for dry running during start-up

Selection Recommendations:

★Technical Specifications Reference (Selected Frame Sizes)

Note: For complete data, consult HelmeDrive engineering.

Understanding GTP Series Model Designation

Example: GTP12L2-BS-50-B532-96-N

★What to Know Before You Buy

▶Select the correct type based on input configuration– Choose N for coaxial input,S for helical gear input,K for bevel gear input, and L for bevel-helical input. The number following (2 or 3) indicates the number of planetary stages.

▶Calculate the required power correctly– Use the formula P_C = P_2 × f1 × f2 × S_f to determine the required nominal power. Then select a gearbox with P_N ≥ P_C from the rating tables. For peak torque conditions, also check P_A = (T_A × n1 × f3) / 9550.

▶Service factors are critical– Select f1 (driven machine coefficient) from Table 1 based on your application and daily operating hours. Adjust for ambient temperature using f4 (thermal factor) from Table 4. The reliability factor S_f depends on the importance of the application (Table 6: 1.2 for general, 1.4 for important, 1.6 for high safety).

▶Thermal power must be verified– For continuous operation, calculate P_G = P_G1 × f4 × f14 and compare with actual power P₂. If P₂ > P_G, auxiliary cooling (forced lubrication with cooler) is required.

▶Mounting position affects lubrication– GTP Series can be installed in any orientation, but vertical mounting requires special attention to lubrication. For positions like V... or B5...1, a compensation tank may be needed to ensure upper bearings are lubricated. Always specify the mounting position when ordering.

▶Check radial loads on output shaft– If the application involves overhung loads (sprockets, pulleys), verify that the actual radial force does not exceed the permissible value FR2 for the selected size. HelmeDrive can provide exact limits on request.

▶Accessories can be added– GTP Series supports various accessories including:

² 96: Base for foot mounting

² 75/76/77: Torque arms for shaft-mounted installations

² 70/71/72/73: Motor mounting brackets and flanges

² SSP/NSP: Backstop for preventing reverse rotation (GTP2K/GTP3K)

▶Lubrication is supplied separately– GTP reducers are delivered without oil. Fill with recommended lubricant (VG220 for -10°C to +40°C) to the correct level indicated on the oil dipstick. Oil quantities vary by size and mounting position – refer to the oil level table.

▶Environmental conditions matter– Standard operating range is-10°C to +40°Cat altitudes up to 1000m. For extreme temperatures, aggressive environments (salt water, chemicals), or special conditions, consult HelmeDrive for customized solutions.

▶Let HelmeDrive help with selection– With 27 frame sizes, multiple input types, and extensive accessory options, proper sizing requires accurate load data. Send your application parameters—power, speed, load type, daily hours, ambient conditions, mounting position, and any special requirements—to HelmeDrive for precise gearbox sizing.

By matching your selection to your actual working conditions and operational challenges, you ensure longer equipment life, lower maintenance costs, and higher system reliability.HelmeDrive is committed to providing robust, efficient solutions tailored to your heavy industrial needs.

📬shawn.zhu@helmedrive.com