The Bafang H730 is an e-bike motor with a 250 W rating, up to 50 N.m of torque, a nominal 36 V, assistance to 25 km/h, a weight of 3.6 kg, 148 mm over-locknut spacing and disc-brake compatibility.
Last updated: 6 September 2026
What we found
- Published as 250 W · 36 V · 25 km/h.
- 18 specifications are published for it, each with the source it was read from, 1 of them corroborated by a second source.
- No matching recall was found in the records this catalogue holds from 8 regulators.
Assembled from the evidence on this page. Every figure and count below is shown with the source it was read from.
Motor and performance
- Maximum torque
- 50 N.m
- Continuous rated power
- 250 W
- Weight
- 3.6 kg
- Assisted speed
- 25 km/h
- Gear ratios
- 0.76, 1 or 1.31
- Special function
- Auto 3 Speed
- Rated voltage
- 36 V
“Max. Possible Torque (Nm)*** 50 Peak locked parameter, reconfiguration possible,depending on the demand of applications and battery output performance.”
Source: bafang-e.com/Uploaded/Labels/BAFANG_Workbook_OEM_2027_EN.pdf
“Rated Power (W) 250”
Source: bafang-e.com/Uploaded/Labels/BAFANG_Workbook_OEM_2027_EN.pdf
“Weight (kg) 3.6”
Source: bafang-e.com/Uploaded/Labels/BAFANG_Workbook_OEM_2027_EN.pdf
“Speed (km/h) 25”
Source: bafang-e.com/Uploaded/Labels/BAFANG_Workbook_OEM_2027_EN.pdf
“Gear ratio 0.76 , 1 , 1.31”
Source: bafang-e.com/Uploaded/Labels/BAFANG_Workbook_OEM_2027_EN.pdf
“Special Function Auto 3 Speed”
Source: bafang-e.com/Uploaded/Labels/BAFANG_Workbook_OEM_2027_EN.pdf
“Nominal Voltage (Vdc) 36”
Source: bafang-e.com/Uploaded/Labels/BAFANG_Workbook_OEM_2027_EN.pdf
Brakes and safety
- Brake type
- Disc-Brake
“Brake Disc-Brake”
Source: bafang-e.com/Uploaded/Labels/BAFANG_Workbook_OEM_2027_EN.pdf
Frame and components
- Spoke specification
- 36H*13G
- Sprocket
- Single - 16T / 18T / 20T / 22T , belt
- Cable exit side
- Shaft Side_Left
- Wheel size
- 20 / 26 / 700C / 28
“Spoke Specification 36H*13G”
Source: bafang-e.com/Uploaded/Labels/BAFANG_Workbook_OEM_2027_EN.pdf
“Sprocket Single - 16T / 18T / 20T / 22T , belt”
Source: bafang-e.com/Uploaded/Labels/BAFANG_Workbook_OEM_2027_EN.pdf
“Cabling Route Shaft Side_Left”
Source: bafang-e.com/Uploaded/Labels/BAFANG_Workbook_OEM_2027_EN.pdf
“Wheel Size (Inch) 20 / 26 / 700C / 28”
Source: bafang-e.com/Uploaded/Labels/BAFANG_Workbook_OEM_2027_EN.pdf
Compatibility
- Motor cable length
- 250 mm
- Over-locknut dimension
- 148 mm
- Connector
- G9.1
- Chain sprockets Bafang recommend
- Bafang SW A310.01.A and .01.B
- Belt sprockets Bafang recommend
Four Gates models — SMN 60, HMN 58.5, SBA 60, SVN 63 mm
BF-UM-C-H730-EN.pdf · retrieved by us 4 September 2026
“Table 2-2 Belt Drive No. Brand Model Number of teeth (T) Sprocket width (mm) Chain width (mm) CL* (mm) 1 CT11**SMN 60 2 CT11**HMN 58.5 Gates ≥22 2.11 / 3 CT11**SBA 60 4 CT11**SVN 63 NOTICE: Please contact the specific brand manufacturer for non-Bafang products.”
Source: bafang-e.com/uploaded/manual/BF-UM-C-H730-EN.pdf
Three Gates models — SMN 60.5, SBA 60.5, SVN 63.5 mm
BF-DM-C-H730-EN.pdf · retrieved by us 4 September 2026
“Table 2-2 Belt Drive No. Brand Model Number of teeth (T) Sprocket width (mm) Chain width (mm) CL* (mm) 1 CT11**SMN 60.5 2 Gates CT11**SBA ≥22 2.11 / 60.5 3 CT11**SVN 63.5”
Source: bafang-e.com/uploaded/manual/BF-DM-C-H730-EN.pdf
- Bafang's caveat on those recommendations
- Bafang do not stand behind the non-Bafang entries
“Cable Length(mm), Connection Type 250 G9.1”
Source: bafang-e.com/Uploaded/Labels/BAFANG_Workbook_OEM_2027_EN.pdf
“OLD (mm) 148”
Source: bafang-e.com/Uploaded/Labels/BAFANG_Workbook_OEM_2027_EN.pdf
“Cable Length(mm), Connection Type 250 G9.1”
Source: bafang-e.com/Uploaded/Labels/BAFANG_Workbook_OEM_2027_EN.pdf
“2.4. Sprocket Recommendation”
Source: bafang-e.com/uploaded/manual/BF-DM-C-H730-EN.pdf
“2.4. Sprocket Recommendation Table 2-1 Chain Drive No. Brand Model Number of teeth (T) Sprocket width (mm) Chain width (mm) CL* (mm) 1 SW A310.01.B 18 58.5 2 SW A310.01.B 20 58.5 3 Bafang SW A310.01.A 16 2.65 1/8" 62 4 SW A310.01.A 18 62 5 SW A310.01.A 20 62”
Source: bafang-e.com/uploaded/manual/BF-UM-C-H730-EN.pdf
The maker’s own documents give different figures
“NOTICE: Please contact the specific brand manufacturer for non-Bafang products.”
Source: bafang-e.com/uploaded/manual/BF-DM-C-H730-EN.pdf
Certification claims
- Certification claimed by the manufacturer
- IP X6 / CE
“Tests & Certifications IP X6 / CE”
Source: bafang-e.com/Uploaded/Labels/BAFANG_Workbook_OEM_2027_EN.pdf
Models documented with this motor
No model has been matched to this motor yet in the records we hold. That is a statement about our research, not about which bikes use it.