SR25 Spur Gearbox - Round

SR25 Series

The SR25 round spur series combines a 25 mm diameter with a sleeve-bearing output. Its gearbox length varies across the listed ratios and reduction stages.

Product Highlights

Listed gear ratios: 8–783:1
Gearbox diameter: 25 mm
Output bearing: sleeve bearing
Gearbox length: 23.5–31.5 mm

Customization Available

Custom output shaft dimensions and features
Mounting and mechanical integration
Gear ratios
Special lubricants

Shop Now Customize

Product Specifications

Model	SR2580000	SR2512000	SR2519000	SR2528000	SR2543000	SR2564000	SR2599000	SR2514800	SR2522800	SR2534000	SR2552400	SR2578300
Gearbox Type	Spur Gearbox - Round	Spur Gearbox - Round	Spur Gearbox - Round	Spur Gearbox - Round	Spur Gearbox - Round	Spur Gearbox - Round	Spur Gearbox - Round	Spur Gearbox - Round	Spur Gearbox - Round	Spur Gearbox - Round	Spur Gearbox - Round	Spur Gearbox - Round
Gearbox Model	SR25	SR25	SR25	SR25	SR25	SR25	SR25	SR25	SR25	SR25	SR25	SR25
Gear Ratio (:1)	8	12	19	28	43	64	99	148	228	340	524	783
Max. Input Speed (rpm)	—	—	—	—	—	—	—	—	—	—	—	—
Number Of Gear Stages	3	3	4	4	5	5	6	6	7	7	8	8
Gearbox Diameter (mm)	25	25	25	25	25	25	25	25	25	25	25	25
Gearbox Length (mm)	23.5	23.5	23.5	23.5	27.5	27.5	27.5	27.5	31.5	31.5	31.5	31.5
Max Continuous Torque (mN·m)	29.42	29.42	39.23	39.23	58.84	58.84	98.07	117.68	117.68	117.68	147.10	147.10
Breaking Torque (mN·m)	88.26	88.26	117.68	117.68	176.52	176.52	294.20	353.04	353.04	353.04	441.30	441.30
Gearbox Efficiency (%)	81	81	73	73	65	65	50	50	50	50	40	40
Gearbox Weight (kg)	0.044	0.044	0.045	0.045	0.045	0.045	0.046	0.046	0.046	0.046	0.047	0.047
Shaft Diameter (mm)	4	4	4	4	4	4	4	4	4	4	4	4
Pinion Hole Diameter (mm)	φ2	φ2	φ2	φ2	φ2	φ2	φ2	φ2	φ2	φ2	φ2	φ2
Operating Temperature Range (°C)	-30 ~ 65	-30 ~ 65	-30 ~ 65	-30 ~ 65	-30 ~ 65	-30 ~ 65	-30 ~ 65	-30 ~ 65	-30 ~ 65	-30 ~ 65	-30 ~ 65	-30 ~ 65
Gearbox Housing Material	Zinc Alloy (Die casting)	Zinc Alloy (Die casting)	Zinc Alloy (Die casting)	Zinc Alloy (Die casting)	Zinc Alloy (Die casting)	Zinc Alloy (Die casting)	Zinc Alloy (Die casting)	Zinc Alloy (Die casting)	Zinc Alloy (Die casting)	Zinc Alloy (Die casting)	Zinc Alloy (Die casting)	Zinc Alloy (Die casting)
Gear Material	Powder Metallurgy (Fe) / Plastics / Steel	Powder Metallurgy (Fe) / Plastics / Steel	Powder Metallurgy (Fe) / Plastics / Steel	Powder Metallurgy (Fe) / Plastics / Steel	Powder Metallurgy (Fe) / Plastics / Steel	Powder Metallurgy (Fe) / Plastics / Steel	Powder Metallurgy (Fe) / Plastics / Steel	Powder Metallurgy (Fe) / Plastics / Steel	Powder Metallurgy (Fe) / Plastics / Steel	Powder Metallurgy (Fe) / Plastics / Steel	Powder Metallurgy (Fe) / Plastics / Steel	Powder Metallurgy (Fe) / Plastics / Steel
Gear Design	Helical Gear / Spur Gear	Helical Gear / Spur Gear	Helical Gear / Spur Gear	Helical Gear / Spur Gear	Helical Gear / Spur Gear	Helical Gear / Spur Gear	Helical Gear / Spur Gear	Helical Gear / Spur Gear	Helical Gear / Spur Gear	Helical Gear / Spur Gear	Helical Gear / Spur Gear	Helical Gear / Spur Gear
Output Shaft Bearing	Sleeve Bearing	Sleeve Bearing	Sleeve Bearing	Sleeve Bearing	Sleeve Bearing	Sleeve Bearing	Sleeve Bearing	Sleeve Bearing	Sleeve Bearing	Sleeve Bearing	Sleeve Bearing	Sleeve Bearing
Lubricant In Gearbox	FUMIO	FUMIO	FUMIO	FUMIO	FUMIO	FUMIO	FUMIO	FUMIO	FUMIO	FUMIO	FUMIO	FUMIO
Axial Play (mm)	0.3	0.3	0.3	0.3	0.3	0.3	0.3	0.3	0.3	0.3	0.3	0.3
Radial Play (mm)	0.05	0.05	0.05	0.05	0.05	0.05	0.05	0.05	0.05	0.05	0.05	0.05
Backlash (°)	2	2	2	2	2	2	2	2	2	2	2	2
Gear Module (M)	0.4	0.4	0.4	0.4	0.4	0.4	0.4	0.4	0.4	0.4	0.4	0.4