Planetary Gear Box

A planetary gearbox is a gearbox with the input shaft and the output shaft aligned. A planetary gearbox is used to transfer the largest torque in the most compact form (known as torque density). The bicycle’s acceleration hub is a great example of a planet-wheel mechanism: Have you ever wondered…

Description

A planetary gearbox is a gearbox with the input shaft and the output shaft aligned. A planetary gearbox is used to transfer the largest torque in the most compact form (known as torque density).

The bicycle’s acceleration hub is a great example of a planet-wheel mechanism: Have you ever wondered how you can get so much power and capabilities in such a little hub? For a three-speed hub, a one-stage planetary gear system is used, for a five-speed hub a 2-stage. Each planet gear system has a reduction state, a direct coupling and an acceleration mode.

In mathematical terms, the smallest reduction ratio is 3: 1, the largest is 10: 1. At a ratio of less than 3, the sun gear becomes too big against the planet gears. At a ratio greater than 10 the sun wheel becomes too small and the torque will drop. The ratios are usually absolute i.e. an integer number.

The planetary gearbox design is fairly simple, consisting of a central sun gear, an outer ring (also referred to as an internal gear, because its tooth face inward), planetary gears, and a carrier. Input power to the sun gear causes it to spin. The planetary gears mesh with the sun gear, and as the sun gear spins, the planetary gears rotate on their axes. The planetary gears also mesh with the ring gear, which is stationary, causing the planetary gears to revolve around the sun gear. The carrier holds the planetary gears together and sets their spacing. It rotates with the planetary gears and incorporates the output shaft.

Single speed planetary gearbox, with the same mounting and output interface as a 2.5″ CIM motor. Each planet gear has its own bearing to spin freely on the carrier plate pins. A 2.5″ CIM Motor may also be used as the motor input, but requires this pinion gear ( am-0556) and a CIM Spacer (am-0555).

Motor Input:

9015 motor fits on this gearbox

550 motor  fits on this gearbox

2.5″ CIM Motor can be mounted, with a bored-out sun gear and a spacer

Included Hardware:

Two – 8mm id ball bearings, (19mm od, 22mm od) supporting output shaft

One – Steel planet and sun gears, 32 dp, 20 degree p.a.

Five – Planet gears (12 tooth)

One – 15 tooth sun gear, with 0.125 inch bore

One – 40 tooth ring gear

Performance Data:

(with the input being a 9015 Fisher-Price motor)

Input voltage: 12 volts

Stall Torque: 1.12 ft-lb.

Free speed: approximately 4,000 rpm

Assembly Tip:

Install the aluminum plate to the face of the motor BEFORE pressing the pinion gear onto the motor shaft.

Specifications

Material: body is aluminum, shaft is 4140 steel

Mounting Holes: #10-32 tapped holes (2), on a 2″ bolt circle to attach at output shaft

Outside dimension: 2.5 in.

Ratio: 3.67:1

Shaft Diameter: 0.313 inch,with 2mm keyway

Weight: 0.63 lbs

Planetary Gear Box

Hot Tags: planetary gear box, China, suppliers, manufacturers, factory, wholesale, buy, made in China

Quick Detail:

Standard and non-standard available
With high quality and competitive price
Prompt delivery
Packing as per customer’s demand.

We promise will offer the best price by the high quality in china! We also accept special order about the products. If you are interested in our products. Please do not hesitate to let us know.We are pleased to give you the detailed information.We promise that our products would be safety and were in high quality and reasonable price. If you are interested in our products, please contact us asap.We are sincerely looking for your cooperation.

Most of our products are exported to Europe or Americas, both standard and nonstandard products available. We can produce as per your drawing or sample. Material can be standard or as per your special request. If you choose us, you choose reliable.

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Materials Available

1. Stainless Steel: SS201, SS303, SS304, SS316, SS416, SS420
2. Steel:C45(K1045), C46(K1046),C20
3. Brass:C36000 ( C26800), C37700 ( HPb59), C38500( HPb58), C27200(CuZn37), C28000(CuZn40)
4. Bronze: C51000, C52100, C54400, etc
5. Iron: 1213, 12L14,1215
6. Aluminum: Al6061, Al6063
7.OEM according to your request
product materials available

Surface Treatment

Annealing, natural canonization, heat treatment, polishing, nickel plating, chrome plating, zinc plating,yellow passivization, gold passivization, satin, Black surface painted etc.

Processing Method

CNC machining, punch,turning, milling, drilling, grinding, broaching, welding and assembly
product finishing

QC & Certificate

Technicians self-check in production,final-check before package by professional Quality inspector
ISO9001:2008 , ISO14001:2001,ISO/TS 16949:2009

Package & Lead Time

Size: Drawings
Wooden Case/Container and pallet, or as per customized specifications.
15-25days samples. 30-45days offcial order
Port: Shanghai/Ningbo port
product packages

FAQ

Q: Are you trading company or manufacturer ?
A: Our group consists in 3 factories and 2 abroad sales corporations.

Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.

Q: How long is your delivery time ? What is your terms of payment ?
A: Generally it is 40-45 days. The time may vary depending on the product and the level of customization. For standard products, the payment is: 30% T/T in advance ,balance before shipment.

Q: What is the exact MOQ or price for your product ?
A: As an OEM company, we can provide and adapt our products to a wide range of needs.Thus, MOQ and price may greatly vary with size, material and further specifications; For instance, costly products or standard products will usually have a lower MOQ. Please contact us with all relevant details to get the most accurate quotation.

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