RS sprocket Fit bore

Product photo
  • Finished shaft bore, keyway and tapped holes are machined by us before shipping.
  • Can immediately be used as is with no additional troublesome finishing.
  • Two types of products are available, please choose the one you prefer.
  • *Fit Bore stock items: select from a list of stock items with finished shaft bore, keyway and tapped holes
  • *Fit Bore short delivery and MTO products: products not listed in the stock item list will be additionally processed as desired within the set range.

Features

  • ・The content of shaft bore and keyway machining is coded with the product model name, so that the customer's requirements can be accurately transferred.
  • ・Fit Bore drawing library allows customers to check the contents of their requirements in advance with drawings. (You can see it from the banner above. )
  • ・Shaft bore, keyway and tapped holes have already been machined, so the product can be used as is after arrival at the customer's premises.

Note) When selecting sprocket specifications

・It is necessary to select a sprocket specification that corresponds to the customer's operating environment and the chain specification used. For details, please refer to the compatibility table for each chain and sprocket.

ベアリング穴加工をご要望の場合はこちら If you require a material or surface treatment other than steel or stainless steel, please contact us as this will be made-to-order product.

Catalogs ・Instruction Manuals

Sprocket structure

Model code A Type
(flat plate )
B type
(Single hub )
C type
(Dual hub )
SD Type
(single dual )
Construction A Type B type C type SD Type
Multi-strand Heavy Duty Chain (Super-H, RS-HT, etc.)  Note 1 For using two single-strand chains at the same time
HB type HC type
Usage by structure Used when mounting on a rotating body, such as the center member of Torque Limiter. Most versatile use. For use with large driven sprockets or when key surface pressure is insufficient with B type. For using two single-strand chains at the same time.

Notes
 1.The total tooth width (transverse pitch) of multi-strand Heavy Duty chains (HB/HC types) differs from the standard.

Model No. examples

Drive sprocket Steel type
RS60-1B20TQ - H 019 N - J 06 D1 M06 - K

Drive sprocket Stainless steel type
RS35-1B10T-SS - H 019 N - J 06 D1 M06

Main Body Code



Shaft Bore Diameter
mm







Keyway Width
mm



Tap size

Surface treatment
(5)
Shaft bore tolerance
(1)
Keyway tolerance
(3)
tap hole machining package
(4)
Shaft bore chamfer
(2)
(1) Shaft bore tolerance (2) Shaft bore chamfer (3) Keyway tolerance (4) tap hole machining package (5) Surface treatment
H:H7
G:G7
M:M7
N:Tsubaki standard
A:C1
B:C2
C:C3
W:None
J:New JIS Js9
P:New JIS P9
F:Old JIS F7
E:Old JIS E9
Blank: No treatment
B:Coated black
K:Electroless nickel phosphorus plating
C:Electrogalvanization (Trivalent chromate treatment )

List of Models

※Click the name for more information.

Stock item

Quick delivery models

Since it is an additional machining from the pilot bore type stock item, please check the stock when ordering.

◎…Models to which a surface treatment can be applied   ○…Models for which shaft bores can be machined     △…Models for which shaft bores can be machined (Restrictions on the machining content )
The blue part is models with hardened teeth   The light blue part is models without hardened teeth   The colorless part is models without hardened teeth (but optional teeth hardening can be applied)

Model / Teeth steel Stainless Model / Teeth
35 40 50 60 80 100 120 140 160 35 40 50 60 80
1B1A1B1CSD2B1A1B1CSD2B1A1B1CSD2B1A1B1CSD2B1A1B1C2B1A1B2B1B1B1B1B1B1B1B
99
1010
1111
1212
1313
1414
1515
1616
1717
1818
1919
2020
2121
2222
2323
2424
2525
2626
2727
2828
3030
3232
3434
3535
3636
3838
4040
4242
4545
4848
5050
5454
6060
6565
7070
7575

Made-to-order

The blue part is models with hardened teeth   The light blue part is models without hardened teeth   The colorless part is models without hardened teeth (but optional teeth hardening can be applied)
○…Models for which shaft bores can be machined   △…Models for which shaft bores can be machined (Restrictions on the machining content )

Model / Teeth steel Model / Teeth
40 50 60 80 100 120 140 160 180 200 240
1C2A2B2C1C2A2B2C2A2B2C2A2B2C1A1B1C2A2B2C1A1B1C2A2B2C1A1B1C1A1B1C1A1B1C1A1B1C1A1B1C
1010
1111
1212
1313
1414
1515
1616
1717
1818
1919
2020
2121
2222
2323
2424
2525
2626
2727
2828
3030
3232
3434
3535
3636
3838
4040
4242
4545
4848
5050
5454
6060
6565
7070
7575

Sprockets for BS/DIN Chains

Model / Teeth steel
06B 08B 10B 12B 16B
1B1A1B2B1A1B2B1A1B2B1A1B2B
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
30
32
34
35
36
38
40
42
45
48
50
54
60

Machining contents

※Click the name for more information.

Finishing range

shaft bore machining (L) Keyway machining (K) Tap hole machining (D)

・Machined dimensions are integers only in 1mm units
Inch dimensions are not applicable

・Machining tolerance ・・・Selectable
H7 ・ G7 ・ M7

・Parallel keyway only

・Machining tolerance ・・・Selectable
Js9 ・ F7 ・ P9 ・ E9
Keyway width and depth are in accordance with JIS standards

・Machining size Selectable

・Machining location (up to 2 locations) Selectable
(See the figure below for the position )

・With set screw

tap hole layout

B=A/2
(May differ depending on welding specifications. )

Long tapped holes will
be counterbored.

Set screw package

・Steel cup point set screws with hexagonal hole

・Use plated set screws, or stainless steel screws with stainless steel sprockets

Shaft bore machining dimensions list

For Js9/P9 (new JIS standards)

Applicable Shaft Bore Diameter
(mm)
Keyway Width
(mm)
Tsubaki standard size Available sizes
10~124M4---
12~175M5M4
17~226M6M5
22~308M6M5, M8
30~3810M8M6, M10
38~4412M8M6, M10
44~5014M8M6, M10
50~5816M10M8, M12
58~6518M10M8, M12
65~7520M12M10, M16
75~8522M12M10, M16
85~9525M16M12, M20
95~11028M16M12, M20
110~13032M20M16
130~15036M20M16
150~17040M20M16
170~(200)45M24M20

If there is no keyway, the chamfer size of the shaft hole will be 1/2 of the table below.

For F7/E9 (old JIS standards)

Applicable Shaft Bore Diameter
(mm)
Keyway Width
(mm)
Tsubaki standard size Available sizes
10~134M4---
14~205M5M4
21~307M6M5
31~4010M8M6, M10
41~5012M8M6, M10
51~6015M8M6, M10
61~7018M10M8, M12
71~8020M12M10, M16
81~9524M12M10, M16
96~11028M16M12, M20
111~12532M20M16
126~14035M20M16
141~16038M20M16
161~17042M20M16

Tsubaki standard chamfer

If there is no keyway, use half values of the table above.
Chamfering specify is restricted when the specified chamfer overlaps with the Tsubaki standard shaft bore chamfer.
Shaft Bore Diameter Chamfer amount
10~201
21~321.2
33~501.6
51~802.5
81~1703

Selectable chamfer

Determined from keyway depth (chamfer amount not exceeding keyway depth)
Shaft Bore Diameter Chamfer code
10~17NA--
18~44NAB-
45~170NABC

Drive Sprocket Bore Finishing and Tapped Hole Positions and Details

Finishing Category A Type B type C type SD Type 2B type
Shaft Bore Key Tap
I --- 0
II 0 ---
III 1 ---
2 ---
3 ---
4 ---
5 ---
IV --- 1 ---
2 ---
3 ---
4 ---
5 ---
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Surface treatment

Code displayed when ordering Package
B Coated black
K Electroless nickel phosphorus plating
C Electrogalvanized trivalent chromate
In the case of black oxide coating, it is also processed in the additional machining part (shaft bore, keyway, tapped hole). Other two specifications are not processed in the additional machining section.

others

Limitations

Limitations Delivery drawings cannot be submitted.
(Please use the drawing download service. )
Please contact us for inspection report and mill sheet.
(If submission is required, it will be treated as a made-to-order item.