Applications include grain carts, mowers, combines, grain augers, potato
harvesters, agricultural sprayers, irrigation pumps and conveyers.

Features:

• Two-piece aluminum housing for high strength, corrosion resistance and thermal capacity
• Precision machined for exact gear mesh and bearing preload
• Precision forged gears are offered in four ratios: 1:1, 1.35:1, 1.5:1 and 2:1
• Spiral bevel available in 1:1
• Tapered roller bearings provide increased load capacity and bearing life
• 1.375″ shaft made of high strength steel is standard; 1.50” shaft available on limited options
• Serviced with 80W90 gear lubricant, run and leak tested before shipment
• The 500 Series weighs 25/30 lbs. including 28 oz of lubricant

R500 Drawing

Rotation Options

Ratings Chart

R500 Series - 1.375" Diameter Shafts

Ratio		Input RPM
		Power & Torque	100	540	1000
Miter	1:1 21, 21 Forged Straight Bevel	Input HP	18.18	71.70	103.57
		Output Torque*	11458	8368	6527
		Input kW	13.56	53.47	77.23
		Output Torque**	1295	945	737
	1:1 21, 21 Cut Spiral Bevel	Input HP	5.38	22.86	34.63
		Output Torque*	3391	2668	2183
		Input kW	4.01	17.05	25.82
		Output Torque**	383	301	247
Reducer	1.35:1 20, 27 Forged Straight Bevel	Input HP	13.51	54.88	80.73
		Output Torque*	11495	8647	6869
		Input kW	10.07	40.92	60.20
		Output Torque**	1299	977	776
	1.5:1 20, 30 Forged Straight Bevel	Input HP	7.47	32.07	48.90
		Output Torque*	7062	5614	4623
		Input kW	5.57	23.91	36.47
		Output Torque**	798	634	522
	2:1 17, 34 Forged Straight Bevel	Input HP	5.25	23.71	37.47
		Output Torque*	6618	5535	4723
		Input kW	3.91	17.68	27.94
		Output Torque**	748	625	534
Increaser	1:1.35 27, 20 Forged Straight Bevel	Input HP	17.77	67.02	94.25
		Output Torque*	8296	5794	4400
		Input kW	13.25	49.98	70.28
		Output Torque**	937	655	497
	1:1.5 30, 20 Forged Straight Bevel	Input HP	10.89	42.72	61.53
		Output Torque*	4576	3324	2585
		Input kW	8.12	31.86	45.88
		Output Torque**	517	376	292

LIMITATIONS ON HORSEPOWER AND TORQUE RATINGS: The horsepower and torque ratings given here are generalizations. Different conditions for various applications may result in higher or lower horsepower capacities. Under certain conditions the maximum indicated RPM may be executed. For these reasons the ratings cannot be guaranteed for any application. Prototype testing should be conducted for each application before production.

Service Factor

	Character of Power Source Shock Load
	Electric Motor Uniform				Multi-Cylinder Engine Light Shock				Single-Cylinder Engine Medium Shock
	Duration of Service (Hours per Day)
Character of Shock Driven Machines	.5	3	10	24	.5	3	10	24	.5	3	10	24
Uniform	0.60	0.80	1.00**	1.25	0.80	1.00	1.25	1.50	1.00	1.25	1.50	1.75
Moderate	0.80	1.00	1.25	1.50	1.00	1.25	1.50	1.75	1.25	1.50	1.75	2.00
Heavy	1.25	1.50	1.75	2.00	1.50	1.75	2.00	2.25	1.50	1.75	2.25	2.50

Seal and bearing kits are available here.

Contact Superior Gearbox with any special requirements

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R500 Series

Applications include grain carts, mowers, combines, grain augers, potato harvesters, agricultural sprayers, irrigation pumps and conveyers.