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Backstop freewheel clutch RIZ...G2G3 RIZ...G3G4

Types RIZ..G2G3/G3G4 from Suma bearing company are centrifugal lift off sprag type freewheels with the inner race rotating. Only the inner race is designed for freewheeling.

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Product Detail

Backstop freewheel clutch RIZ...G2G3 RIZ...G3G4

Feature

Types RIZ..G2G3/G3G4 from Suma bearing company are centrifugal lift off sprag type freewheels with the inner race rotating. Only the inner race is designed for freewheeling.

They are self-contained units designed for backstop applications. The overrunning speed must not be less than the minimum specified in the table. This must be considered if using a variable speed drive. The torque bolt must be fitted into a slot on a fixed part of the machine.The radial clearance should be 1–3 % of the bolt diameter.The torque arm and bearings must not be axially loaded.

They are a type RIZ, (» see page 84) equipped with G type covers featuring grease pockets and contact free seals. When ordered complete, the unit is delivered grease lubricated, ready for either horizontal or vertical installation.

Different types of Backstop freewheel clutch RIZ...G2G3 RIZ...G3G4

Type	Size		Speeds									Weight
RIZ..G2G3 RIZ..G3G4	d^H7	T_KN¹⁾	n_max²⁾	n_imin³⁾	D	D₂	C	L ₁	L₂	L₃	f
	[mm]	[Nm]	[min-1 ]	[min-1 ]	[mm]	[mm]	[mm]	[mm]	[mm]	[mm]	[mm]	[kg]
	30	375	700	9000	100	45	16	68	88	14	1	4.5
	35	550	670	8500	110	50	20	74	96	18	1	5.6
	40	800	630	7500	125	55	20	86	109	18	1.5	8.5
	45	912	610	6700	130	60	25	86	109	22	1.5	8.9
	50	1400	560	6000	150	70	25	94	116	22	1.5	12.8
	60	2350	510	5300	170	80	32	114	139	25	2	19.3
	70	3050	470	4000	190	90	38	134	168	30	2.5	23.5
	80	5800	375	4000	210	105	38	144	178	30	2.5	32
	90	8700	350	3000	230	120	50	158	192	40	3	47.2
	100	16000	340	2400	270	140	50	182	217	40	3	76
	130	23000	320	2400	310	160	68	212	250	55	3	110

NOTES
1) T _max = 2 × T _KN
» Refer to Selection page 10 to 13
2) This minimum allowable overrunning speed n imi
should not be reduced under continuous operation.
Possible reduction of this minimum speed on request.
3) Inner race overruns
Keyway to DIN 6885.1
When ordering, please specify direction of rotation seen
from arrow &bdquo;A“: &bdquo;R“ Inner race overruns in clockwise
direction, &bdquo;L“ Inner race overruns in counterclockwise
directionr
» Refer to mounting and maintenance instructions
page 16 to 19

MOUNTING EXAMPLE