K Series helical-bevel gear reducer

K Series helical-bevel gear reducer

Model No.︰K37-187

Brand Name︰REDSUN

Country of Origin︰China

Unit Price︰US $ 200 / pc

Minimum Order︰10 pc

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Product Description


1.High modular design

2.High loading support, stable transmitting and low noise level.

3.Excellent sealing, wide range of industry application.

4.High efficiency and save power.

5.Save cost and low maintenance.

Main applied for:

1.Harbor and shipping

2.Hoist and transport

3.Electric power

4.Coal mining

5.Cement and construction

6.Paper and light industry

7.Chemical industry and environmental protection.Etc.

Technical Data:


Housing material

Cast iron/Ductile iron

Housing hardness HBS190-240
Gear material 20CrMnTi alloy steel
Surface hardness of gears HRC58°~62 °
Gear core hardness HRC33~40
Input / Output shaft material 42CrMo alloy steel
Input / Output shaft hardness HRC25~30
Machining precision of gears Accurate grinding, 6~5 Grade
Lubricating oil GB L-CKC220-460, Shell Omala220-460
Heat treatment Tempering, cementiting, quenching, etc.
Efficiency 94%~96% (depends on the transmission stage)
Noise (MAX) 60~68dB
Temp. Rise (MAX) 40°C
Temp. Rise (Oil)(MAX) 50°C
Vibration ≤20µm
Backlash ≤20Arcmin
Brand of bearings

China top brand bearing, HRB/LYC/ZWZ/C&U.Or other brands requested, SKF, FAG, INA, NSK.

Brand of oil seal NAK --- Taiwan or other brands requested



Solid Shaft Dia.


Hollow Shaft Dia.


Center Height


Output Flange Dia.





Permissible Torque




37 φ25k6 φ30h7 100 φ110/160 0.18-3.0 5.36-106.38 200 11
47 φ30k6 φ35h7 112 φ120/200 0.18-3.0


400 20
57 φ35k6 φ40h7 132 φ155/250 0.18-5.5 6.57-145.14 600 27
67 φ40k6 φ40h7 140 φ155/250 0.18-5.5


820 33
77 φ50k6 φ50h7 180 φ170/300 0.37-11.0 7.24-292.18 1550 57
87 φ60m6 φ60h7 212 φ215/350 0.75-22.0 7.19-197.18 2700 85
97 φ70m6 φ70h7 265 φ260/450 1.1-30.0


4300 130
107 φ90m6 φ90h7 315 φ304/450 3.0-45.0 8.74-141.46 8000 250
127 φ110m6 φ100h7 375 φ350/550 7.5-90.0 8.68-146.07 13000 380
157 φ120m6 φ120m6 450 φ400/660 11.0-160.0 12.65-150.41 18000 610
167 φ160m6 φ160m6 500 φ800 11.0-200.0 17.28-163.91 32000 1015
187 φ190m6 φ190m6 600 φ800 18.5-200.0 17.27-180.78 50000 1700


High Efficiency Low Noisy Gear Boxes


Our Company:

1.It is a professional company specialized in researching,developing and selling gearboxes which was

founded in 2001.

2.Redsun factory occupies 35000 Sqm and  370 staffs.

3.The annual production capacity of speed reducer is around 70000 sets.
High Efficiency Low Noisy Gear Boxes

Our Workshop:

High Efficiency Low Noisy Gear Boxes


High Efficiency Low Noisy Gear Boxes



Q: Are you trading company or manufacturer ?
A: We are factory.

Q: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock.

Q: Can we buy 1 pc of each item for quality testing?
A: Yes, we are glad to accept trial order for quality testing.

Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance, balance before shippment.
If you have another question, pls feel free to contact us


For more details, contact me below:

Tony Ye: info(at)cn-redsun.com

Price Terms︰ FOB,CNF,CIF,etc

Payment Terms︰ TT/LC

Packing︰ Wooden Case, Standard Export Package.

Lead Time︰ 30 Days


Standards Certificate︰ ISO9001:2015

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