RSSD Roller

	Fastener Introduction

	Standard Download

	FAQ

ADD: No.403 Xingye North Road,
315324 Zhouxiang,Cixi,Zhejiang

TEL: +86 574 63333066

FAX :+86 574 63333065

E-mail: rssd@yahoo.cn

Material：

The ring and balls of RSSD bearings are made of refining bearing steel GCr15(AISI 52100), the retainer are punched from brass strip (H62) or top quality cold-rolled steel strip (SPCC BQB402) and reinforced engineering plastics are available if necessary. The shield is made of improved special material or (SPCC JISG3141) stainless steel (ICr18Ni9) strip and the bune-N rubber seal with phosphatizing steel skeleton are hot pressed.
The stainless steel bearing's ring and balls are refining stainless steel 9Cr18(AISI 1440C).
The chemical composition of bearing steel and stainless steel are listed as follows:

Steel No.	C%	Si%	Mn%	S%	P%	Cr%
GCr15	0.95-1.05	0.15-0.3	0.25-0.45	<0.025	<0.025	1.3-1.6
9Cr18	0.90-1.05	<0.8	<0.8	0.04	<0.03	16-19

Corresponding Designation Equivalent to GCr15

China	ISO	USA	Germany	Japan	Sweden
GCr15	683/XVII	52100 (ASTM)	100Cr6 (DIN)	SUJ2 (JIS)	SKF3

Tolerance：

RSSD bearing is of general-purpose, and the tolerance of common bearings of general-purpose(Class 0) is shown in table. Please specify in order if customer have any special tolerance requrement.

d mm		△dmp		Vdp			Vdmp	Kia	△Bs		VBs
				Diameter Series
				9	0.1	2,3,4
Over	Incl.	Max	Min	Max			Max	Max	Max	Min	Max
2.5 10 18	10 18 30	0 0 0	-8 -8 -10	10 10 13	8 8 10	6 6 8	6 6 8	10 10 13	0 0 0	-120 -120 -120	15 20 20

D mm		△Dmp		VDp				VDmp	Kea	△Cs		VCs
				Open bearing			Capped bearing
				9	0.1	2,3,4	2,3,4
Over	To	Max	Min	Max				Max	Max	Max	Min	Max
6 18 30	18 30 50	0 0 0	-8 -9 -11	10 12 14	8 9 11	6 7 8	10 12 16	6 7 8	15 15 20	Identical to △Bs and VBs of same bearing

RSSD bearing is manufactured according to the relevant specifications of China's National Standard GB, which is equivalent to ISO standard.

Standard	Tolerance Grade
GB	O	6	5	4	2
ISO	O	6	5	4	2
JIS	0	6	5	4	2
SKF	P0	P6	P5	P4	P2
DIN	P0	P6	P5	P4	P2
ANSI	ABEC1	ABEC3	ABEC5	ABEC7	ABEC9

Clearance：

Bearing internal clearance is defined as the total distance through which one bearing ring can be moved relative to the other. The operational clearance of a bearing has great influence on the running condition, life, vibration level, noise value, and thermal expansion of bearing. Following tables give the clearance for the various bearing types in the conditions of without preload.

Radial internal of deep groove ball bearings(including cylindrical bore)

bore(mm)		group 2-C2		basic group C0		group 3-C3		group 4-C4		group 5-C5
Over	To	Min	Max	Min	Max	Min	Max	Min	Max	Min	Max
2.5	6	0	7	2	13	8	23	-	-	-	-
6	10	0	7	2	13	8	23	14	29	20	37
10	18	0	8	3	18	11	25	18	33	25	45
18	24	0	10	5	20	13	28	20	36	28	48
24	30	1	11	5	20	13	28	23	41	30	53

Note: When measuring the clearance, we should take into consideration of the extra clearance arisen from the measuring load.

Lubrication:

The bearings are divided into various types such as open bearings, single shields or double shield(Z,ZZ) and single seal or double seals(RS,2RS). They are filled with proper quantity antirust lubricant or grease before shipment. All these bearings can be used after unpacking without cleaning. they are suitable for light to medium load, low to moderate speed and the working temperature from –20。C—110。C equipment. In case of any particular working condition is involved, customer must mark lubricant quantity of be filled and lubricant brand. Attached is the performance and application of usual lubricants.

Company Brand	Designation	Dropping Tem. 。C	Penetration at 25。C	Working Tem. 。C	Remarks
Shell	Alvania RL2	185	265～295	-35～120	General purpose
	Alvania RL3	185	220～250	-35～135
	Alvania RA	180	250～275	-25～100
	Alvania EP1	180	310～340	-25～110
	Alvania EP2	185	265～295	-25～110
	Darina 2	250	265～295	-25～150	High tem.Servoce
	Darina EP2	250	265～295	-25～150	High tem.Servoce
	Dolium R2	250	265～295	-35～150	Corrosion resistant

Exxon (Esso)	Andok C	260	190～210	-30～120	General purpose
	Andok 260	190	204～260	-40～120	General purpose
	Beacon 325	190	255～280	-54～120	Low tem.service

Chevron	SRI-2	240	255～280	-30～120	Water resistant

Mobil	Mobilux 2	190	265～290	-10～110	General purpose
	Mobil 22	192	250～274	-40～120	General purpose
	Mobil 28	260	265～295	-55～175	Wide range tem.service
	Mobil 48	260	240～270	-60～170	High tem.service

Kluber	Isoflex LDS 18	190	255～280	-50～110	Low tem. service
Kluber	Isoflex NBU 15	250	255～280	-30～120	General purpose

Kyodo Yushi	Multemp SRL	185	255～245	-40～145	Low torque service
	Multemp PS2	190	250～275	-50～110	Low tem. service
	Multemp SC-A	260	255～280	0～160	Low tem. service
	Multemp ET150	260	255～280	-10～160	High tem. service

China Hangu	Hangu 2	198	265～295	-10～130	Low noise service

Vibration & Noise:

The vibration and noise of bearings are classified as Z、Z1、Z2、Z3、Z4. It is measured by the instrument of S0910-1, For special requirement, it is measured by BVT-1 and classified as V、V1、V2、V3. The data are shown as below customer need mark the requirement of vibration and noise class in order.

Tolerance Data for vibration of single bearing

d mm	V			V1			V2			V3
d mm	low band	medium band	high band	low band	medium band	high band	low band	medium band	high band	low band	high band	high band
5 6 7 8 9 10 12 15 17 20 22 25 28 30	110 110 130 130 130 160 160 210 210 260 260 260 260 300	72 72 96 96 96 120 120 150 150 190 190 190 190 240	60 60 80 80 80 100 100 120 120 150 150 150 150 190	90 90 110 110 110 140 140 180 180 220 220 220 220 250	60 60 80 80 80 100 100 130 130 160 160 160 160 200	50 50 65 65 65 85 85 100 100 125 125 125 125 160	58 58 72 72 72 90 90 110 110 130 130 130 130 150	36 36 48 48 48 60 60 78 78 100 100 100 100 120	30 30 40 40 40 50 50 60 60 75 75 75 75 100	35 35 44 44 44 55 55 65 65 80 80 80 80 90	21 21 28 28 28 35 35 46 46 60 60 60 60 75	18 18 24 24 24 30 30 35 35 45 45 45 45 60

Maximum vibration acceleration of single bearing

d mm	Diameter Series(0)				Diameter Series(2)					Diameter Series(3)
d mm	Z	Z1	Z2	Z3	Z	Z1	Z2	Z3	Z4	Z	Z1	Z2	Z3	Z4
5 6 7 8 9 10 12 15 17 20 22 25 28 30	37 37 39 39 41 43 44 45 46 47 47 48 49 49	36 36 38 38 40 42 43 44 44 45 45 46 47 47	34 34 35 35 36 38 39 40 40 41 41 42 43 43	30 30 31 31 32 33 34 35 35 36 36 38 39 39	38 38 40 40 42 44 45 46 47 48 48 49 50 50	37 37 38 38 40 42 43 44 45 46 46 47 48 48	34 34 36 36 37 39 41 41 42 42 43 44 44 45	32 32 34 34 35 35 35 36 36 38 38 40 41 41	- - - - - 30 30 31 31 33 33 36 37 37	39 39 - - - 46 47 48 49 50 50 51 52 52	37 37 - - - 44 45 46 47 48 48 48 49 50	35 35 - - - 40 40 42 42 43 43 44 45 45	33 33 - - - 37 37 38 38 39 39 41 42 42	- - - - - 32 32 33 33 34 34 37 38 38