Hollow Shaft Helical Gearbox
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Hollow Shaft Helical Gearbox

Parallel shaft helical gearbox is a mechanical speed reduction device with a parallel gear shaft system at its core. The gearbox function is to transmit power through multi-stage gear meshing, achieving "reduced speed and increased torque," while the input and output shafts always remain parallel. It is an important component of industrial transmission systems and is often used in conjunction with motors (it can be selected and assembled separately or integrated with a motor to form a parallel shaft geared motor), and is widely used in various power transmission scenarios requiring "low speed and high torque."

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Product Introduction

What is a hollow shaft helical gearbox?

The hollow-shaft helical gear reducer is a type of modular, hardened-gear, parallel-axis reducer. Unlike solid-shaft models, its defining feature is an integrated hollow output shaft.
The input and output shafts are parallel and aligned in the same direction, maintaining the original drive orientation. Speed reduction and torque amplification are achieved through multi-stage helical gear meshing, while the hollow shaft allows for direct mounting onto the driven main shaft to transmit power.
Key features of this model include integrated slip-on mounting, a compact design, and suitability for heavy-duty coupled equipment; it is a standard drive component for automated assembly lines, roller conveyors, and mixing machinery.

models

Parallel shaft gearbox with hollow output shaft

Parallel shaft gearbox with solid output shaft

Parallel shaft gearbox with output flange

Parallel shaft gearbox with output flange and solid shaft

Paraments

Model	Output Shaft Dia. (mm)		Power	Ratio	Max. Torque
Model	Solid Shaft	Hollow Shaft	(kW)	(i)	(Nm)
F37	25mm	30mm	0.18~3.0	3.81~128.51	200
F47	30mm	35mm	0.18~3.0	5.06~189.39	400
F57	35mm	40mm	0.18~5.5	5.18~199.70	600
F67	40mm	40mm	0.18~5.5	4.21~228.99	820
F77	50mm	50mm	0.37~11	4.30~281.71	1500
F87	60mm	60mm	0.75~22	4.20~271.92	3000
F97	70mm	70mm	1.1~30	4.68~276.64	4300
F107	90mm	90mm	2.2~45	6.20~255.25	7840
F127	110mm	100mm	7.5~90	4.63~172.33	12000
F157	120mm	120mm	11~200	12.07~270.18	18000

Features

1. Direct plug-in connection, eliminating the need for couplings
No couplings or connecting flanges are required. The hollow shaft connects directly to the equipment's main shaft, reducing the number of transmission components and lowering the costs of procurement and installation for the entire machine.

2. High coaxiality and reduced operational vibration
The integrated hollow shaft ensures precise concentricity and shift-free power transmission. Compared to external drive systems using solid shafts, it exhibits minimal operational vibration and slower gear wear, resulting in a longer service life.

3. Flexible installation; fits narrow racks
The unit features a compact, lightweight design that does not require lateral installation space. It can be mounted inside the equipment rack, making it suitable for the layouts of compact, non-standard automation equipment.

helical gear motor

Products description

Model	Parallel Shaft Helical Gearbox
Efficiency	Up to 98%
Gear type	Helical
Material	Cast Iron
Lubricant	VG220
Customized support	OEM, ODM, OBM
Warranty	12 month

Drawings

product-1241-636

product-1437-1065

product-1371-864

product-1374-861

product-1430-711

product-1350-867

product-1104-1380

product-1113-945

product-1131-369

Parallel shaft gearbox

Installation position

product-909-445

Application

Hollow Shaft Helical Gearbox Common applications include:

Conveyor systems
Automated production lines
Packaging machinery
Food processing equipment
Warehousing and logistics equipment
Printing machinery
Textile machinery
Environmental protection equipment
Automated parking systems

Our advantage

production and delivery

product-1654-2232

Company profile

company advantage

product-1-1

FAQ

Q1: What is the difference between a hollow-shaft helical gear reducer and a solid-shaft reducer?

A1: Solid-shaft reducers rely on couplings for transmission, whereas hollow-shaft reducers mount directly onto the main shaft, eliminating the need for a coupling; this results in a more compact design, superior coaxial alignment, and faster installation, making them ideal for integrated drive systems involving rollers or agitators.

Q2: Are hollow shafts with locking assemblies better than those with keyways?

A2: For standard, light-duty applications, keyway-style shafts offer better cost-effectiveness. However, for high-frequency reversing, heavy-duty loads, or high-precision transmission, hollow shafts with locking assemblies are the preferred choice; they prevent damage to the main shaft and eliminate slippage.

Q3: Can a hollow-shaft helical gear reducer be used for a right-angle change of direction?

A3: No. It is a parallel-axis transmission, so the direction of transmission remains unchanged; for a 90-degree change of direction, a hollow-shaft worm gear reducer should be selected.

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