HYENA MRC-E250 Electric Bike Rear Hub Motor User Manual
- June 12, 2024
- HYENA
Table of Contents
MRC-E250 Electric Bike Rear Hub Motor
Product Manual
MRC-E250
Introduction
This manual is intended primarily for the trained technician to install,
disassemble, or maintain the Hyena e-bike system only.
Please read all the safety warnings and instructions carefully. Failure to
follow the warnings and instructions may result in death or severe injuries.
Save this manual for future reference.
Product Features
Product Description
The MRC-E250 rear hub motor provides power for the e-bike. It features an
amazingly lightweight, extra small size, and is maintenance-free.
Parts Description
| Item | Description | Item | Description |
|---|---|---|---|
| A | M6 Hex socket security bolt | D | Sticker (remove on install) |
| B | Anti-rotation flange nut | E | Cable (connect to controller) |
| C | M5 button-head hex socket screw | F | Cassette mounting base |
Product Dimension
28H: 40010M20B-1
| Item | Dimension |
|---|---|
| A | Φ120.0 |
| B | Φ3.0. 28 Holes |
| C | PCD Φ109.0 |
| D | PCD Φ44.0 |
| E | Cable 220+10 -0 mm |
| F | 25.2 |
| G | 47.0 |
| H | 8.0 |
| I | 41.2 |
| J | 13.8±0.1 |
| K | 35.0 |
| L | 13.8±0.1 |
| M | 15.5 |
| N | 72.2 |
| o | 144.5±1 |
| P | 172±1 |
| Q | 10+0 -0.2 |
| R | 10+0 -0.2 |
32H: 40010M20A-1
| Item | Dimension |
|---|---|
| A | Φ120.0 |
| B | Φ3.0, 32 Holes |
| C | PCD 0109.0 |
| D | PCD 044.0 |
| E | Cable 220+10 -0 mm |
| F | 25.2 |
| G | 47.0 |
| H | 8.0 |
| I | 41.6 |
| J | 13.6±0.6 |
| K | 35.0 |
| L | 13.8±0.1 |
| M | 15.5 |
| N | 72.2 |
| 0 | 144.5±1 |
| P | 172±1 |
| Q | 10+0 -0.2 |
| R | 10+0 -0.2 |
Technical Data
Function
Rated power| 250 W|
Rated voltage| 36 V|
Wheel size| 26 to 28 inches|
Max. torque| 40 Nm|
No-load RPM| 2 270 RPM| w/o loading
Max. current at nO RPM| N 1.7 A| w/o loading
Max. noise at no RPM| < 60 dB| w/o loading
Rated RPM| 250 ±5% RPM|
Max. efficiency| 280%|
Weight| 2.2 Kg|
Waterproof level| IP54|
Hall sensor| Yes|
Speed sensor| Yes| 1 Magnet
Characteristic
Protocol| N/A
Control type| Sine wave
Reduction ratio| 1:12.6
Operating temperature| -10°C to +50°C 80%RH
Storage temperature| -20°C to +70°C 80%RH
Insulation| ≥50 Am
Mounting Parameter
Mounting position| Rear Hub|
Outer dimension| 120 mm|
Shaft length| 197 mm|
O.L.D. (over-locknut dimension)| 144.5 mm|
Axle type| 10 mm|
Spoke hole| 28H/32H| 28H: 40010M2013-1
32H: 40010M20A-1
Spoke hole type| 13G|
Brake type| Disk brake BCD 44 mm 6 bolts|
Derailleur| Cassette 8-11 speed| ≥ 34T freewheel
Cable outlet| Non-drive side through the shell|
Cable length| 220-±10 mm|
Standard connector| CM-WP412-09M|
Connection
N/A
Certification
EN 15194:2017| Yes
CE| Yes
RoHS| Yes
Mounting
Tool List
Torque wrench set
Hexagon key set
Freewheel tool
Accessory List
Mounting Instructions
- Use the proper bicycle tools during the installation or removal process.
- Carefully installing this product is necessary, do not strike it with any tool such as a hammer or wrenches.
- CAUTION! Please strictly follow these steps for assembly; otherwise, an incorrect assembly may cause permanent damage.
- NOTE: The bike image in the manual may be different from the actual bike, but will be enough to help you understand related instructions.
Exploded View of Assembly
Installation
Peel the sticker away from the motor (left side). 
Install the disc. 
Fasten the screws (maximum torque 4.5
Nm). 
Install and fasten the cassette sprocket and
cassette locking ring (right side). 
Install the motor (rear
wheel).
Insert the torque washer through the motor
shaft (washer bulge aligns with the flat side of the shaft), then fasten the
flange nut (maximum torque 11 Nm).
Completed.
Safety Instructions
Instructions Pertaining To A Risk Of Fire, Electric Shock, Or Injury To
Persons
WARNING – When using the MRC-E250, basic precautions should always be
followed, including the following:
- Read all the instructions before using the product.
- Close supervision is necessary to reduce the risk of injury when using the product near children.
- Do NOT put fingers or hands into the product.
- Do NOT use this product if the flexible power cord or output cable is frayed, has broken insulation, or any other signs of damage.
- All the component leads shall use original Hyena components.
- This product is not intended to be used at ambient temperatures above 50°C (122°F) or less at ambient temperatures of -10°C (14°F).
- Do NOT immerse the product or any e-system component in water.
- Do NOT place the product or any e-system component near fire or heat.
- Always turn off the e-bike system and remove the battery before installing, disassembling, or modifying any components on the e-bike.
Important Notice
- This product manual is intended primarily for the trained technician to install, disassemble or maintain the e-bike.
- Users who are not professionally trained for bicycle assembly should not attempt to install, disassemble or modify the components themselves.
- All Hyena e-system manuals and technical documents are accessible online at “www.hyena-ebike.com”.
- The term “battery” is used in these instructions to mean all original Hyena e-Bike batteries.
- Read and observe the safety warnings and directions contained in all the Hyena e-bike system operating instructions and in the operating instructions of your e-bike.
Moving and Storage Instructions
- When possible, keep the product and all e-system components in their original package and keep tools or other metal objects away from them while storage and moving.
- If you did not keep the original packaging, they can be packed in solid cartons with proper packing materials such as bubble wrap or soft cloth, and label the cartons Fragile.
- Do NOT store the product at ambient temperatures above 70°C (158°F) or less at ambient temperatures of -20°C (-4°F).
- Cover the product to prevent sunlight damage if you keep it stored at any place for more than a week.
- Store the product on a fireproof surface without contact with water, heat, or sand.
- Do NOT place any heavy item on the product or any e-system component.
- Do NOT place the product or any e-system component in the car trunk for more than one day.
- Do NOT load or move the product in the rain whenever possible, and make sure it has no moisture or mildew before loading it.
- Do NOT drop the product from more than 30cm (11.81 inches) in height.
Maintenance
- Do NOT clean the product or any e-system component with detergent or organic solvent. Only clean the product with a water-dampened soft cloth.
- Do NOT clean the product or any e-system component with pressured water.
Disposal
- In accordance with Directive 2012/19/EU, electronic devices that are no longer usable and defective/drained batteries must be collected separately and recycled in an environmentally friendly manner.
This symbol is only valid within the European Union. Follow local regulations when disposing of used batteries. If you are not sure, consult the place of purchase or a bicycle dealer.
- The e-system drive unit, including the motor, controller, battery, speed sensor, HMI, accessories, and packaging, should be disposed of in an environmentally correct manner.
- Do NOT dispose of e-bikes and their components with household waste.
SAVE THESE INSTRUCTIONS
Original Instruction
Version 221206
Copyright © 2022 HYENA INC. All Right Reserved.
Hyena Inc.
Tel: +886 4 23598810
Fax: +886 4 23598610
www.hyena-ebike.com
Address: No.25, Jingke N. Rd., Nantun Dist., Taichung City 408, Taiwan
(R.O.C.)
HYENA E-BIKE SYSTEMS