Product Description
Km Series Aluminium Alloy 7.5~300 Ratio 90 Degree Hypoid Gear Motor Vertical Hypoid Reduction Gearbox with Electric Motor
Product Parameters
Applicable Industries |
Garment Shops, Manufacturing Plant, Machinery Repair Shops, Food & Beverage Factory |
Gearing Arrangement |
Hypoid |
Output Torque |
100~500NM |
Input Speed |
1400rpm |
Output Speed |
5~187 |
Place of Origin |
China |
Brand Name |
HUAKE |
Product name |
Hypoid gear reducer |
Color |
Blue |
Ratio |
5-400 |
Certificate |
ISO9001 CCC CE |
Detailed Photos
Product Description
KPM-KPB series helical-hypoid gearboxes are the new-generation product with a compromise of advanced technology both at home and abroad.This product is widely used in textile, foodstuff, beverage,tobacco, logistics industrial fields,etc.
Main Features:
(1) Driven by hypoid gears, which has big ratios.
(2) Large output torque, high efficiency(up to 92%), energy saving and environmental protection.
(3) High quality aluminum alloy housing, light in weight and non-rusting.
(4) Smooth in running and low in noise, and can work long time in dreadful conditions.
(5) Good-looking appearance, durable service life and small volume.
(6) Suitable for all round installation, wide application and easy use.
(7) KPM series can replace NMRV worm gearbox; KPB series can replace CHINAMFG W series worm gearbox;
(8) Modular and multi-structure can meet the demands of various conditions.
Main Material:
(1) Housing: aluminum alloy
(2) Gear wheel: 20CrMnTiH1,carbonize & quencher heat treatment make the hardness of gears surface up to 56-62 HRC, retain carburization layers thickness between 0.3 and 0.5mm after precise grinding.
Gearbox Application
Company Profile
Certifications
Packaging & Shipping
FAQ
Application: | Motor, Electric Cars, Motorcycle, Machinery, Marine, Toy, Agricultural Machinery, Car, Transmission Parts |
---|---|
Function: | Distribution Power, Clutch, Change Drive Torque, Change Drive Direction, Speed Changing, Speed Reduction, Speed Increase |
Layout: | Cycloidal |
Hardness: | Hardened Tooth Surface |
Installation: | Torque Arm Type |
Step: | Single-Step |
Samples: |
US$ 80/Piece
1 Piece(Min.Order) | |
---|
How to Install and Align a Worm Reducer Properly
Proper installation and alignment of a worm reducer are crucial for ensuring optimal performance and longevity. Follow these steps to install and align a worm reducer:
- Preparation: Gather all the necessary tools, equipment, and safety gear before starting the installation process.
- Positioning: Place the worm reducer in the desired location, ensuring that it is securely mounted to a stable surface. Use appropriate fasteners and mounting brackets as needed.
- Shaft Alignment: Check the alignment of the input and output shafts. Use precision measurement tools to ensure that the shafts are parallel and in line with each other.
- Base Plate Alignment: Align the base plate of the reducer with the foundation or mounting surface. Ensure that the base plate is level and properly aligned before securing it in place.
- Bolt Tightening: Gradually and evenly tighten the mounting bolts to the manufacturer’s specifications. This helps ensure proper contact between the reducer and the mounting surface.
- Check for Clearance: Verify that there is enough clearance for any rotating components or parts that may move during operation. Avoid any interference that could cause damage or performance issues.
- Lubrication: Apply the recommended lubricant to the worm reducer according to the manufacturer’s guidelines. Proper lubrication is essential for smooth operation and reducing friction.
- Alignment Testing: After installation, run the worm reducer briefly without a load to check for any unusual noises, vibrations, or misalignment issues.
- Load Testing: Gradually introduce the intended load to the worm reducer and monitor its performance. Ensure that the reducer operates smoothly and efficiently under the load conditions.
It’s important to refer to the manufacturer’s installation guidelines and specifications for your specific worm reducer model. Proper installation and alignment will contribute to the gearbox’s reliability, efficiency, and overall functionality.
How to Calculate the Efficiency of a Worm Gearbox
Calculating the efficiency of a worm gearbox involves determining the ratio of output power to input power. Efficiency is a measure of how well the gearbox converts input power into useful output power without losses. Here’s how to calculate it:
- Step 1: Measure Input Power: Measure the input power (Pin) using a power meter or other suitable measuring equipment.
- Step 2: Measure Output Power: Measure the output power (Pout) that the gearbox is delivering to the load.
- Step 3: Calculate Efficiency: Calculate the efficiency (η) using the formula: Efficiency (η) = (Output Power / Input Power) * 100%
For example, if the input power is 1000 watts and the output power is 850 watts, the efficiency would be (850 / 1000) * 100% = 85%.
It’s important to note that efficiencies can vary based on factors such as gear design, lubrication, wear, and load conditions. The calculated efficiency provides insight into how effectively the gearbox is converting power, but it’s always a good practice to refer to manufacturer specifications for gearbox efficiency ratings.
What Industries Commonly Use Worm Reducers?
Worm reducers are versatile mechanical components that find applications in various industries due to their unique advantages and capabilities. Some of the industries that commonly use worm reducers include:
- Material Handling: Worm reducers are widely used in material handling equipment such as conveyors, bucket elevators, and cranes to control movement and manage heavy loads.
- Automotive: They are utilized in automotive manufacturing processes, assembly lines, and vehicle positioning systems.
- Food and Beverage: Worm reducers are used in food processing and packaging machinery where hygiene and cleanliness are crucial.
- Agriculture: Agricultural equipment like irrigation systems and tractors use worm reducers for controlling rotational motion.
- Mining and Construction: Heavy-duty applications in mining equipment, excavators, and construction machinery benefit from the torque multiplication provided by worm reducers.
- Energy: Wind turbines and solar tracking systems use worm reducers to convert low-speed, high-torque motion into rotational energy.
- Textile: Textile machinery employs worm reducers for controlling speed and tension in weaving and spinning operations.
- Packaging: Packaging equipment relies on worm reducers for precise movement and positioning of packaging materials.
- Medical: Medical devices and equipment often utilize worm reducers for their accuracy and controlled motion.
- Printing: Printing machines use worm reducers to regulate paper feed and ensure consistent printing quality.
Worm reducers’ ability to provide high torque output, compact design, and self-locking characteristics makes them suitable for applications requiring reliable and controlled motion across various industries.
editor by CX 2023-10-23
China factory Ep Series Precision Planetary Gear Motor CNC Gear Box Stepping Motor Gearbox Motor Price NEMA 23 Automatic Professional Price Planetary Gearbox OEM
Merchandise Description
Ep Collection Precision Planetary Equipment Motor CNC Equipment Box Stepping Motor Gearbox Motor Price NEMA 23 Computerized Specialist Price tag Planetary gearbox
TYPE AND Model NUMBER
PL 80 – 40 P2 S2 OP1
1 2 3 4 5 6
Planetary Gearbox Body Code:
PL: Round flange mounting Series
WPL: Right-angle Spherical flange mounting Collection
PF:Sq. flange mounting Sequence
WPF: Right-angle Sq. flange mounting Series
HAB: Higher Rigidity substantial precision Sq. housing Collection
WHAB: Correct-angle High Rigidity substantial precision Sq. housing Sequence
HAT: Proper-angle Double flange Double shaft Collection
one. Gearboxes Code:sixty,seventy five,eighty,90,110,one hundred fifteen,a hundred and twenty,one hundred forty,a hundred and fifty,a hundred and sixty
2. Ratio:
Single stage:3,4,5,7,8,ten
Doublestages:9,ten,twelve,fifteen,sixteen,20,twenty five,30,32,35,forty,50,64,70,a hundred
Three levels:60,80,one hundred,120,one hundred sixty,two hundred,256,320,512
3. Backlash:
P1:Precision
P2:Common
four. Output shaft sort
S1: Shaft CZPT crucial
S2: Shaft with essential
T: Special need
six. Input shaft variety
OP1: Integral Hoop clamp CZPT
OP2: Break up kind Hoop clamp CZPT (without keyway)
OP3: Integral Hoop clamp CZPT with keyway
OP4: Reinforcement Integral Hoop clamp coupling( ideal for often CW and CCW)
OP5: Only keyway connect CZPT
OP6: Other variety connect coupling
Dimension previously mentioned PL120(which includes) higher torque products undertake integral double wall planet pinion provider, improve the output strength and precision.
Hoop clamp CZPT have 5 link ways suitable for distinct software environments:
Dimensions previously mentioned PL120(which includes) precision and higher toughness integral inner gear housing, processed in 1 station, which eliminate the cumulative mistake and assembling mistake of break up sort. Get rid of CZPT approach adopt very hot forging approach, which will reduce the blank material flaws.
The meshing equipment adopt shaving process right after carburizing and quenching, which simpler to make gear area smooth and high precision, lessen the temperature CZPT induced by gear area gluing and friction.
Gear reducers are also known as reducers. Mechanical components, by either of these two names, are made to lessen the electrical power transferred between the motor and the machine amongst the rotational speeds (revolutions per minute). The reducer efficiently decreases the rotational pace created by the motor, therefore controlling the velocity at which the device operates and escalating the torque developed by the motor. Multiplying the torque developed by the motor raises the machine’s offered electrical power – a approach identified as “mechanical dominance”. In a greater context, gear reducers are fundamentally resources employed to enhance the performance of tools procedure.
Planetary gearboxes are utilized in various events in which high performance and substantial reduction ratio are necessary in a little room. Showcasing high precision and large torque-to-quantity ratio, it is excellent for torque boost, deceleration, specific positioning and manage of regenerative machinery. To make sure that the chosen planetary gearbox is the ideal match for your application, it is essential to contemplate parameters this sort of as torque, backlash and gear ratios when selecting a planetary gearbox.
China Standard Automatic Transmission Parts Small Differential Gear Box for Tractor supplier
Merchandise Description
Car Components Automobile Spare Components Transmission Gear Gearing Device Velocity Reducer gear
Equipment reducers, also named reducers, arrive in several transmission types and are designed to multiply torque and lessen enter pace to a wanted output velocity. The major reward of inline gearboxes is their capability to preserve handle in apps involving large rotational speeds. Their efficiency and ability to give substantial input speeds with nominal backlash make inline reducer gearboxes perfect for a extensive selection of motion manage programs
Gearboxes can be utilized in numerous fields of comprehensive processing, agriculture, chemical processing, oil and fuel, electricity transmission and distribution methods, logistics, warehousing and other industries. Equipment reducers are normally utilised the place increased torque and/or decrease rotational speeds are necessary, or if power requirements to be transmitted at alternating angles, such as in right-angle motors. It can also alter the route of rotation, as well as clockwise and counterclockwise. EP provides a complete selection of gear reducers with right angle worms and large performance choices. Electric powered Gear Aluminum items are a lightweight and tough option to today’s forged iron and steel designs and can be stocked or customized produced to your precise specifications. EP gearboxes are light-weight and durable, aluminum worm gearboxes are created for restricted spaces, such as tough-to-set up OEM designs as nicely as cellular tools. Eccentric reducers are offered as compact aluminum or forged iron inline reducers with seal existence ratings from 15HP (aluminum) to 40HP (cast iron). In addition to our common and modified normal products, our engineers will perform with you to design and construct custom made solutions for a number of travel technologies to fit your software demands.
China high quality Small Automatic Transmission Gearbox Transmission Gear Box supplier
Solution Description
little computerized transmission gearbox
Surface area:As your prerequisite
Materials:Steel / aluminum / brass / iron / copper / bronze / titanium / ss / spring metal / nylon, teflon, plastic
Any other materials and dimension is dependent on customers’ demand.
Primary business Marketplaces:
United states, Canada, Germany, Italy, British isles, Japan, Australia
Major Consumers:
HP, Jabil, ECHELON ( United states)
DAIWA (Japan)
Check equipments:
CMM
Projector
Concentric degree detector
Constant temperature and humidity test chamber
Hardness tester, Spring testing equipment
Insertion power screening machine
Microscope
Stress testing equipment
Thread gauge, gap gauge and ring gauge
Additional Abilities CAD Style Providers CAM Programming Services Coordinate Measuring Equipment (CMM) Reverse Engineering
Materials Alloy Steels/ Aluminum/ Brass/ Bronze Alloys Carbon Steel/ Copper/ Stainless Metal/ Resource Metal
Chilly Rolled Steel/ Bearing Steel
Specification | Customized produced / OEM |
Our attributes | 1.17 a long time history 2.Brief direct time 3.Great following-sale provider 4.Cost-free samples offered |
Material | Stainless metal, copper, brass, carbon steel, aluminum (in accordance to customer’s prerequisite. |
Area Treatment | Zn-plating, Ni-plating, Cr-plating, Tin-plating, copper-plating, the wreath oxygen resin spraying, the heat disposing, very hot-dip galvanizing, Black oxide coating, portray, powdering, coloration zinc-plated, blue black zinc-plated, rust preventive oil, titanium alloy galvanized, silver plating, plastic, Electroplating, anodizing etc. |
Main Products | Precision screw,bolt, nuts,fas10er,knob,pins, bushing, sleeve,gear, stamping parts,washer,gasket,plastic molding injection areas,standoff,CNC machining support,equipment and so on. |
Creating Products | CNC device , automated lathe device,stamping equipment,CNC milling device,rolling device,lasering,tag grinding equipment and so on. |
Management System | ISO9001 – 2008 |
Obtainable Certification | RoHS, SGS, Content Certification |
Testing Equipment | Projecting apparatus, Salt Spray Test, Durometer, and CZPT thickness tester , 2d projector |
Lead time | 10-15 working times as common,It will primarily based on the thorough buy quantity. |
Handling Returned Goods | With top quality problem or deviation from drawings |
Shipping and delivery of Samples | By DHL,Fedex,UPS, TNT,EMS^^ |
Guarantee | Substitute at all our value for rejected merchandise |
Major Markets | North The usa, South The united states, Japanese Europe , West Europe , North Europe, South Europe, Asia |
How to get | * You ship us drawing or sample |
* We carry through undertaking evaluation | |
* We give you our design for your affirmation | |
* We make the sample and send out it to you after you confirmed our design and style | |
* You verify the sample then location an buy and spend us 30% deposit | |
* We begin creating | |
* When the products is d1, you spend us the balance after you confirmed pictures or tracking figures. | |
* Trade is d1, thank you!! | |
Apps | Toy,Automotive, instrument, electrical tools, family appliances, furniture, mechanical equipment, daily dwelling gear, digital sporting activities tools, Gentle sector goods, sanitation machinery, marketplace/ hotel gear supplies, artware and so forth. |
When hunting at a reducer vs a gearbox, typically the only big difference is terminology. This is simply because all reducers are gearboxes. Even so, not all gearboxes are retarders. This may audio difficult, but it really is really really simple. A reducer is a gear established in between the motor and the equipment. The goal of the reducer is to minimize the rotational speed transferred amongst these two endpoints. The reducer amplifies and multiplies the torque (enter) produced by the motor. 2nd, a reducer, as the name implies, decreases the velocity of the input (output in rpm) so that the output is the right pace. The term “gearbox” is just a generic expression employed for the equipment teach amongst the motor and the machine. Therefore, all reducers are gearboxes. Nonetheless, not all gearboxes lessen enter velocity. Though unusual, gearboxes can really increase input speeds. By considerably the most frequent type of gearbox is a retarder, but it would be incorrect to say that all gearboxes are retarders.
Gearboxes are mechanical products that support travel methods sustain ideal pace and torque for programs. Also identified as gearboxes and equipment drives, they decrease the rotational pace of the enter shaft by a specific percentage and enhance the power delivered to the output shaft by the exact same share. Ratio multipliers enhance the deceleration and torque supplied by the reducer by a specified ratio and are appropriate for parallel installations. Mounting bases, torque arms and flange couplings are equipment utilised with the reducer. They are typically utilised in programs where the reducer is not straight related to the travel system.
China Free Design Custom Fada J600 Trade Advance Reverse Reduction Small Gear Box Automatic Repair Kit Auto Prices Electric Motor Marine Gearbox Great quality
Merchandise Description
CZPT J600 Trade CZPT Reverse Reduction Modest Maritime Gearbox
Product Description
CZPT J600 trade progress reverse reduction modest marine transmission gearbox for ship
J600 Modle
Housing model:SAE 00. | Flange:sixteen”,eighteen”,21″ | |
L×W×H: | 907×1214×1126mm | N.W.1300kgs |
Nominal coefficient | Accurate coefficient | Ratio (horsepower/r/m) |
two:01 | two.00:1 | .sixty five |
two.5:one | 2.48:1 | .sixty five |
3:01 | three.00:1 | .sixty five |
three.5:one | 3.58:1 | .six |
four:01 | three.89:1 | .55 |
JD600 Modle
Housing:SAE 00. | Flange:sixteen”,18″,21″ | |
L×W×H: | 907×1214×1271mm | N.W.1400kgs |
Nominal coefficient | Accurate coefficient | Ratio (horsepower/r/m) |
four:01 | four.18:1 | .sixty five |
four.5:one | 4.43:one | .sixty five |
4.7:1 | 4.70:one | .sixty three |
5:01 | 5.00:one | .6 |
5.5:1 | five.44:one | .6 |
5.7:1 | 5.seventy one:1 | .fifty five |
JT600 Modle
Housing:SAE 00. | Flange:16″,eighteen”,21″ | |
L×W×H: | 907×1214×1221mm | N.W.1400kgs |
Nominal coefficient | Accurate coefficient | Ratio (horsepower/r/m) |
six:01 | 6.06:1 | .six |
six.5:1 | 6.49:one | .fifty five |
seven:01 | six.ninety seven:1 | .5 |
seven.5:1 | 7.fifty one:one | .5 |
eight:01 | eight.05:1 | .forty six |
8.5:1 | eight.69:1 | .forty one |
9:01 | 9.35:one | .38 |
Appropriate angle gearboxes (worm and planetary gears) are sturdy and can be employed for 90° turns. An inline reducer (parallel shaft and planetary) is an excellent matching motor with higher input speeds, or when gear motor efficiency is important. Contact our complex revenue personnel to help decide which transmission solution is best for you.
China Best Sales Ep Series Precision Planetary Gear Motor CNC Gear Box Stepping Motor Gearbox Motor Price NEMA 23 Automatic Professional Price Planetary Gearbox Standard
Merchandise Description
Ep Sequence Precision Planetary Gear Motor CNC Equipment Box Stepping Motor Gearbox Motor Cost NEMA 23 Automatic Specialist Price tag Planetary gearbox
TYPE AND Design NUMBER
PL 80 – 40 P2 S2 OP1
1 2 3 4 5 6
Planetary Gearbox Frame Code:
PL: Round flange mounting Sequence
WPL: Correct-angle Round flange mounting Collection
PF:Square flange mounting Series
WPF: Appropriate-angle Sq. flange mounting Collection
HAB: Large Rigidity large precision Sq. housing Sequence
WHAB: Appropriate-angle Large Rigidity high precision Sq. housing Collection
HAT: Correct-angle Double flange Double shaft Sequence
1. Gearboxes Code:sixty,75,80,ninety,a hundred and ten,a hundred and fifteen,120,a hundred and forty,one hundred fifty,a hundred and sixty
2. Ratio:
Single phase:3,4,5,7,8,10
Doublestages:9,10,twelve,fifteen,sixteen,twenty,twenty five,thirty,32,35,forty,50,sixty four,70,100
Three stages:sixty,eighty,a hundred,120,one hundred sixty,200,256,320,512
three. Backlash:
P1:Precision
P2:Normal
4. Output shaft variety
S1: Shaft CZPT crucial
S2: Shaft with key
T: Specific require
6. Input shaft sort
OP1: Integral Hoop clamp coupling
OP2: Split type Hoop clamp coupling (CZPT keyway)
OP3: Integral Hoop clamp coupling with keyway
OP4: Reinforcement Integral Hoop clamp coupling( suitable for regularly CW and CCW)
OP5: Only keyway link coupling
OP6: Other sort link coupling
Size above PL120(like) high torque items undertake integral double wall earth pinion carrier, enhance the output sCZPT and precision.
Hoop clamp coupling have 5 relationship approaches ideal for diverse software environments:
Dimension above PL120(such as) precision and large sCZPT integral internal equipment housing, processed in one station, which eliminate the cumulative mistake and assembling error of split variety. Get rid of casting approach undertake very hot forging method, which will minimize the blank substance problems.
The meshing equipment adopt shaving procedure following carburizing and quenching, which easier to make equipment floor clean and higher precision, minimize the temperature increasing induced by equipment surface gluing and friction.
The phrase “gearbox” is used to refer to any gadget that connects a motor to a equipment and consists of a sequence of gears, also recognized as a equipment established. It receives the principal enter pace from the motor and alterations it to a different output speed utilizing its gears. Different varieties and combinations of gears provide certain reasons. The sorts of gears discovered in gearboxes incorporate spur gears, bevel gears, helical gears, helical gears and worm gears. The performance efficiency of a gearbox is represented by the gearbox ratio, which is the ratio of the pace of the input source to the pace of the output source
China sales Small Automatic Transmission Gearbox Transmission Gear Box Free Design Custom
Merchandise Description
small automatic transmission gearbox
Floor:As your necessity
Content:Steel / aluminum / brass / iron / copper / bronze / titanium / ss / spring steel / nylon, teflon, plastic
Any other materials and dimension relies upon on customers’ desire.
Major organization Markets:
Usa, Canada, Germany, Italy, Uk, Japan, Australia
Key Buyers:
HP, Jabil, ECHELON ( United states)
DAIWA (Japan)
Test equipments:
CMM
Projector
Concentric degree detector
Continual temperature and humidity take a look at chamber
Hardness tester, Spring tests machine
Insertion pressure tests device
Microscope
Rigidity testing machine
Thread gauge, gap gauge and ring gauge
Extra Capabilities CAD Design and style Services CAM Programming Providers Coordinate Measuring Machines (CMM) Reverse Engineering
Material Alloy Steels/ Aluminum/ Brass/ Bronze Alloys Carbon Steel/ Copper/ Stainless Steel/ Instrument Metal
Cold Rolled Steel/ Bearing Steel
Specification | Customized made / OEM |
Our features | 1.17 a long time history 2.Limited guide time 3.Great right after-sale services 4.Free of charge samples provided |
Substance | Stainless metal, copper, brass, carbon metal, aluminum (according to customer’s requirement. |
Surface area Therapy | Zn-plating, Ni-plating, Cr-plating, Tin-plating, copper-plating, the wreath oxygen resin spraying, the heat disposing, very hot-dip galvanizing, Black oxide coating, portray, powdering, color zinc-plated, blue black zinc-plated, rust preventive oil, titanium alloy galvanized, silver plating, plastic, Electroplating, anodizing and so on. |
Main Items | Precision screw,bolt, nuts,fastener,knob,pins, bushing, sleeve,gear, stamping areas,washer,gasket,plastic molding injection elements,standoff,CNC machining services,equipment etc. |
Generating Gear | CNC device , automatic lathe equipment,stamping machine,CNC milling machine,rolling machine,lasering,tag grinding machine and so forth. |
Administration Method | ISO9001 – 2008 |
Obtainable Certification | RoHS, SGS, Content Certification |
Screening Equipment | Projecting equipment, Salt Spray Test, Durometer, and CZPT thickness tester , Second projector |
Lead time | ten-15 doing work days as usual,It will based mostly on the detailed get amount. |
Managing Returned Merchandise | With good quality dilemma or deviation from drawings |
Delivery of Samples | By DHL,Fedex,UPS, TNT,EMS^^ |
Warranty | CZPT at all our value for turned down items |
Principal Markets | North The usa, South The usa, CZPT Europe , West Europe , North Europe, South Europe, Asia |
How to get | * You ship us drawing or sample |
* We carry by way of undertaking assessment | |
* We give you our style for your affirmation | |
* We make the sample and deliver it to you right after you confirmed our design | |
* You validate the sample then spot an get and shell out us 30% deposit | |
* We begin generating | |
* When the products is carried out, you spend us the equilibrium following you confirmed pictures or monitoring figures. | |
* Trade is completed, thank you!! | |
Programs | Toy,Automotive, instrument, electrical equipment, family appliances, furnishings, mechanical gear, everyday living products, electronic sports gear, Gentle market merchandise, sanitation machinery, market place/ lodge tools provides, artware and so forth. |
When hunting at a reducer vs a gearbox, often the only variation is terminology. This is since all reducers are gearboxes. However, not all gearboxes are retarders. This may possibly audio complex, but it truly is really really basic. A reducer is a gear set amongst the motor and the machine. The objective of the reducer is to decrease the rotational velocity transferred among these two endpoints. The reducer amplifies and multiplies the torque (input) produced by the motor. Next, a reducer, as the identify suggests, decreases the pace of the enter (output in rpm) so that the output is the correct velocity. The phrase “gearbox” is just a generic phrase utilised for the equipment prepare between the motor and the device. Therefore, all reducers are gearboxes. However, not all gearboxes reduce input speed. Even though unheard of, gearboxes can truly improve input speeds. By much the most common sort of gearbox is a retarder, but it would be incorrect to say that all gearboxes are retarders.