​Double Double pitch Sprocket Fit bore Bore

Product Photos
  • We process the shaft hole, keyway, and tapped hole before shipping.
  • There is no need for the customer to perform any additional work, and the product can be used as is.
  • You can freely select from the processing options you have set.

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Features

  • - The details of shaft hole processing and keyway processing are coded in the product name, so the customer's order details can be communicated accurately.
  • ・ Fit Bore Drawing Library allows customers to check the details of their orders in advance using drawings. (See the banner above.)
  • - The shaft hole, keyway, tapped hole, etc. are already processed, so the product can be used as is after it arrives to the customer.

Note: When selecting sprocket specifications

- You must select a sprocket that is compatible with your operating environment and the chain specifications you are using. For details, please refer to the compatibility chart for various chains and sprockets.

If you require bearing hole processing, please click here. If you require materials other than steel or stainless steel or surface treatment, etc., these will be special orders, so please contact us here.

Catalogs and Instruction Manuals

Model number display example

Double pitch sprocket
RF2060S-1B1100T Q - H 030 N - J 08 D2 M06 - H1 -K
｜
Main unit model number		 ｜
｜
｜		 ｜
｜
｜		 ｜
Shaft Hole Diameter
mm		 ｜
｜
｜
｜
｜		 ｜
｜
｜		 ｜
Keyway width
mm		 ｜
｜
｜		 ｜
Tap Size		 ｜
Parallel symbols
(5)		 ｜
Surface Treatment
(6)
Tooth tip hardening
None: No tooth tip hardening
Q: Hardened teeth		 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
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

* Tap arrangement for H1 and H3 in parallel use is
half-assembled in mirror image, Mirror Image, so D4 and D5 cannot be selected.
(See the parallel symbol diagram)
(5) Parallel symbols *Set of two (6) Surface treatment
  • H0: None
  • H1: Hub installation direction: Inner-inner
  • H2: Hub mounting direction: same direction
  • H3: Hub installation direction: Outer-outer
  • *For parallel use, when using two sprockets on the same shaft,
    The keyway position is aligned with the specified mounting direction.
  • *Please select the hub mounting direction from the three patterns shown below.

Hub installation direction image

Hub installation direction image

*For H1 and H3, half-assembled in mirror image, Mirror Image.

half-assembled in mirror image, Mirror Image

For general sprockets used in parallel, the tap arrangement is machined symmetrically.

Example: For D2M16-H1
One is D2 (90° to the right of the key), and the other is D5 (90° to the left of the key).

half-assembled in mirror image, Mirror Image
No note: None
B: black oxide finish
K: Electroless nickel-phosphorus plating
C: Electrogalvanized (trivalent chromate treatment)
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Product List

Quick delivery models

This is an additional machining on pilot bore type stock items, so please check stock before ordering.

◎...Surface treatment required ○...Shaft hole processing required △...Shaft hole processing required (there are restrictions on processing)
Blue part is tooth tip hardening specification Light blue part is tooth tip non-hardening specification Colorless part is tooth tip non-hardening specification (tooth tip hardening treatment can be added)

​Double Double pitch Sprocket

Roller type

Variety/tooth number		 steel stainless
S R S R
RF2040SRF2050SRF2060SRF2080SRF2100SRF2120SRF2160SRF2040RRF2050RRF2060RRF2080RRF2100RRF2120RRF2160RRF2040SRF2050SRF2060SRF2080SRF2040RRF2050RRF2060R
912T◎◎◎◎◎◎◎○○○○
1000T◎◎◎◎
1012T◎◎◎◎○○○○
1100T◎◎◎◎◎○○○○○
1112T◎◎◎◎○○○○
1200T◎◎◎◎◎◎◎◎○○○○○○○
1212T◎◎◎◎○○○○
1300T◎◎◎◎○○○
1400T◎◎◎◎
1500T◎◎◎◎
1600T◎◎◎◎
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Double Plus Free Flow Chains sprocket

Variety/tooth number steel
RF2030VRPRF2040VRPRF2050VRPRF2060VRPRF2080VRP
10T○○○○△
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Top chain sprocket

Number of teeth steel stainless
TTTTPTTUTTUPTPFTPUSRTPUNTPUSR
800T◎
1000T◎◎
1012T◎◎◎◎◎
1013T
1100T◎
1112T◎◎◎◎◎
1200T◎◎
1212T◎◎◎◎◎
1300T◎
1500T◎○
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Machining contents

*Click to display detailed information.

Processing range

Shaft hole processing (L) Keyway processing (K) Tap hole processing (D)

・Processing dimensions are integers in 1mm increments only
Inch dimensions not applicable

・Processing tolerance...selectable
H7, G7, M7

・Parallel keyway only

・Processing tolerance...selectable
Js9, F7, P9, E9
Keyway width and depth conform to JIS standards

・Processing size can be selected

・You can select up to two processing locations
(See the diagram below for location)

- Comes with a set screw

Tap hole location

B=A/2
(This may differ depending on welding specifications, etc.)

If the tapped hole is long,
It comes with countersinking.

Set screw specifications

・Hexagonal socket,
Made of steel with a recessed tip.

- Plated or stainless steel body
If so, install stainless steel screws.

Shaft hole machining dimensions list

In the case of JS9/P9 (new JIS)

Applicable shaft hole diameter
(mm)		 Keyway width
(mm)		 Tsubaki Standard
size		 Selected size
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 bore chamfer dimensions will be half of those in the table below.

In the case of F7 and E9 (old JIS)

Applicable shaft hole diameter
(mm)		 Keyway width
(mm)		 Tsubaki Standard
size		 Selected size
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 shaft hole chamfer

If there is no keyway, half of the above table
Chamfer designation is restricted where the Tsubaki standard shaft hole chamfer and the specified chamfer overlap.
Shaft Hole Diameter Shaft hole chamfer
10～201
21～321.2
33～501.6
51～802.5
81～1703

Selectable bore chamfer

Determined from the keyway depth (chamfering amount that does not exceed the keyway depth)
Shaft Hole Diameter Selectable chamfer amount
10～17NA--
18～44NAB-
45～170NABC

*Some chamfer amounts cannot be selected depending on the size and hub type. Please check Drawing Library for details.

Double pitch, Top chain, and Double Plus Free Flow Chains sprockets Shaft hole processing and tap hole position classification, details

Processing category Double pitch TT For Double Plus Free Flow Chains
Shaft hole key Tap
I --- 0
II 0
III 1
2
3
4
5
IV --- 1
2
3
4
5
(Note) The tapped hole angle for the TT type (for Top chain) may differ from the above table depending on the number of teeth.

Parallel symbols

H0 none
H1 Hub installation direction: Inner-inner
H2 Hub installation direction: Same direction
H3 Hub mounting direction: Outer-outer
  • - For parallel use, when two sprockets are used on the same axis, the keyway position is aligned in the specified installation direction.
  • - Please select the hub mounting direction from the three patterns shown in the diagram below.

Hub installation direction image

Hub installation direction image

Surface treatment range

Ordering code Specification
B black oxide finish
K Electroless nickel-phosphorus plating
C Electrogalvanized (trivalent chromate treatment)
In the case of black dyeing, additional processing parts (shaft holes, keyways, tapped holes) are also processed.
The other two specifications will not be processed as additional parts.

others

Limitations

Limitations Please contact us for inspection report and material certificate.
(If submission is required, it will be treated as a general special form.)
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