Tsubaki BB Series User manual

Cam Clutch Ｍａｎｕａｌ
ＢＢ Ｓｅｒｉｅｓ
ＢＢ、ＢＢ－１Ｋ－Ｋ、ＢＢ－２Ｋ－Ｋ、ＢＢ－２ＧＤ、ＢＢ－２ＧＤ１Ｋ－Ｋ
ＢＢ１５～ＢＢ４０、ＢＢ１５－１Ｋ－Ｋ～ＢＢ４０－１Ｋ－Ｋ、ＢＢ１５－２Ｋ－Ｋ～ＢＢ４０－２Ｋ－Ｋ、
ＢＢ１５－２ＧＤ～ＢＢ４０－２ＧＤ、ＢＢ１５－２ＧＤ１Ｋ－Ｋ～ＢＢ４０－２ＧＤ１Ｋ－Ｋ
Thank you for buying Cam Clutch products.
Before installing or working on the product, check label for correct size and make sure you have the complete set of
parts. If any part is missing, contact your distributor immediately.
This manual should be considered an essential part of the unit and remain with the unit when redistributed.
ＳＡＦＥＴＹ
 Your Cam Clutch is a high quality, sophisticated unit which should be handled by experienced engineers only.
 For safety purposes, make sure this manual is easily accessible by the user at all times.
Safety precautions in this manual are classified into two categories: “WARNING” and “CAUTION”. These are defined as follows:
WARNING Death or serious injury may result from misusing the product without following the instructions.
CAUTION
Minor or moderate injury, as well as damage to the product may result from misusing the product
without following the instructions.
Notice that although categorized under “CAUTION”, subjects discussed may lead to serious results depending on the situation.
WARNING
● Make sure turning forces are not applied to Cam Clutch or turning shaft of the equipment when conducting inspection or maintenance.
Pay special attention to the back stopping application to prevent accidents.
● Frequent starting and stopping will apply excessive force on the mounting. Verify mounting strength.
● Inaccurate installation and mounting, various load conditions, wear and tear of parts, and life expectancy can all affect the performance of a
● Cam Clutch. Inspect and maintain periodically and install a safety devise on your equipment.
● Comply with Ordinance on Labor Safety and Hygiene 2-1-1 general standards.
CAUTION
● To ensure safety and optimal performance, carefully read this instruction manual in its entirety.
● Confirm rotational direction prior to installing.
■ Structure
ＢＢ ｔｙｐｅ ＢＢ－１Ｋ－Ｋ ｔｙｐｅ ＢＢ－２Ｋ－Ｋ ｔｙｐｅ
ＢＢ－２ＧＤ ｔｙｐｅ ＢＢ－２ＧＤ１Ｋ－Ｋ ｔｙｐｅ
①Inner Race
②Outer Ｒａｃｅ
③Ｃａｍ Ｃａｇｅ
④Ｓｔｅｅｌ Ｂａｌｌ
⑤Shield
⑥Ｒｅｔａｉｎｅｒ
①Inner Race
②Outer Ｒａｃｅ
③Ｃａｍ Ｃａｇｅ
④Ｓｔｅｅｌ Ｂａｌｌ
⑤Shield
⑥Ｒｅｔａｉｎｅｒ
⑦Ｋｅｙ
①Inner Race
②Outer Ｒａｃｅ
③Ｃａｍ Ｃａｇｅ
④Ｓｔｅｅｌ Ｂａｌｌ
⑤Shield
⑥Ｒｅｔａｉｎｅｒ
⑦Ｋｅｙ
⑧Ｋｅｙ
①Inner Race
②Outer Ｒａｃｅ
③Ｃａｍ Ｃａｇｅ
④Ｓｔｅｅｌ Ｂａｌｌ
⑤Sｅａｌ
⑥Ｒｅｔａｉｎｅｒ
⑦Ｓｉｄｅ Ｐｌａｔｅ
①Inner Race
②Outer Ｒａｃｅ
③Ｃａｍ Ｃａｇｅ
④Ｓｔｅｅｌ Ｂａｌｌ
⑤Sｅａｌ
⑥Ｒｅｔａｉｎｅｒ
⑦Ｓｉｄｅ Ｐｌａｔｅ
⑧Ｋｅｙ

Model No. Recommended
shaft dia. (mm)
Recommended
housing bore dia.
(mm)
BB15/BB15-2GD
15
＋0.023
＋0.012
35
－0.012
－0.028
BB17/BB17-2GD
17
＋0.023
＋0.012 40
－0.012
－0.028
BB20/BB20-2GD
20
＋0.028
＋0.015 47
－0.012
－0.028
BB25/BB25-2GD
25
＋0.028
＋0.015 52
－0.014
－0.033
BB30/BB30-2GD
30
＋0.028
＋0.015 62
－0.014
－0.033
BB35/BB35-2GD
35
＋0.033
＋0.017
72
－0.014
－0.033
BB40/BB40-2GD
40
＋0.033
＋0.017 80
－0.014
－0.033
Model No. Recommended shaft
dia. (mm)
Recommended housing bore dia. (mm)
BB15-1K-K
BB15-2GD1K-K BB15-2K-K
BB15-1K-K/BB15-2K-K
/BB15-2GD1K-K 15 －0.008
－0.028 35 －0.012
－0.028 35 －0.002 －0.018
BB17-1K-K/BB17-2K-K
/BB17-2GD1K-K
17 －0.008
－0.028 40 －0.012
－0.028 40 －0.002 －0.018
BB20-1K-K/BB20-2K-K
/BB20-2GD1K-K 20 －0.010
－0.031 47 －0.012
－0.028 47 －0.003 －0.022
BB25-1K-K/BB25-2K-K
/BB25-2GD1K-K 25 －0.010
－0.031 52 －0.014
－0.033 52 －0.003 －0.022
BB30-1K-K/BB30-2K-K
/BB30-2GD1K-K 30 －0.010
－0.031 62 －0.014
－0.033 62 －0.003 －0.022
BB35-1K-K/BB35-2K-K
/BB35-2GD1K-K 35 －0.012
－0.037 72 －0.014
－0.033 72 －0.006 －0.025
BB40-1K-K/BB40-2K-K
/BB40-2GD1K-K 40 －0.012
－0.037 80 －0.014
－0.033 80 －0.006 －0.025
Fig. 1. Installation to housing bore Fig. 2. Installation to shaft
Tsubakimoto Chain Co.: hereinafter referred to as
“
Seller
”
Customer: hereinafter referred to as “Buyer”
Goods sold or supplied by Seller to Buyer: hereinafter referred to as “Goods”
1. Warranty period without charge
18 months effective the date of shipment or 12 months effective the first use of Goods, including
installation of Goods to Buyer’s equipment or machines - whichever comes first.
2. Warranty coverage
Should any damage or problem with the Goods arise within the warranty period, given that the Goods
were operated and maintained under instructions provided in the manual, Seller would repair and replace
at no charge once the Goods are returned to Seller. The following are excluded from the warranty.
1) Any costs related to removing Goods from the Buyer’s equipment or machines to repair or replace
parts.
2) Costs to transport Buyer’s equipment or machines to the Buyer’s repair shop.
3) Costs to reimburse any profit loss due to any repair or damage and consequential losses caused by
the Buyer.
3. Warranty with charge
Seller will charge any investigation and repair of Goods caused by:
1) Improper installation by failing to follow the instruction manual.
2 )Insufficient maintenance or improper operation by the Buyer.
3) Incorrect installation of Goods to other equipment or machines.
4) Any modifications or alterations of Goods by the Buyer.
5) Any repair by engineers other than the Seller or those designated by the Seller.
6) Operation in an inappropriate environment not specified in the manual.
7) Force Majeure or forces beyond the Seller’s control such as natural disasters and injustice done
by a third party.
8) Secondary damage or problem incurred by the Buyer’s equipment or machines.
9) Defected parts supplied, or specified by the Buyer.
10) Incorrect wiring or parameter setting by the Buyer.
11) The end of life cycle of the Goods under normal usage.
12) Loss or damage not liable to the Seller.
4. Dispatch Service
Service to dispatch a Seller’s engineer to investigate, adjust or trial test Seller’s Goods is at the Buyer’s
expense.
5. Disclaimer
1) In our constant efforts to improve, Tsubakimoto Chain Co. may change the contents of this
document
without notice.
2) Considerable effort has been made to ensure that the contents of this document are free from
errors. However, Tsubakimoto Chain Co. makes no warranties with respect to the accuracy of
information described herein. In the mean time, we would appreciate comments or reports on any
inaccuracies or omissions found in this document to help us make timely amendments as necessary.
Your cooperation is greatly appreciated.
■ Recommended shaft diameter and housing bore diameter.
Machine the shaft and housing to the measurements and tolerances given in the table below.
Torque is transmitted by press fit, for models without keyways. Clutch may slip if the shaft and housing are not machined to the recommended dimensions.
■ Cautions for installation
１．The arrow on the inner race indicates the direction of inner race
engagement.
２．Install to the housing of sprocket, gear, etc.
Press fit types (BB, BB-1K-K, BB-2GD, BB-2GD1K-K)
Press outer race (Refer to Fig. 1)
Keyed outer race type (BB-2K-K)
Use the key provided to secure the housing and Cam Clutch, because
the fit is neither press nor loose. Then, install ball bearing. Never use
set bolt on the outer race to fix the key, because it may deform the
outer race.
３．Installation to shaft
Press fit types (BB, BB-2GD) Press housing (Cam Clutch is already
installed) to the shaft by applying force to the inner race of Cam Clutch. (Refer to Fig. 2)
Keyed inner race types (BB-1K-K, BB-2K-K, BB-2GD1K-K) Use the key provided to install to the shaft.
４．Key and keyway
Standard key and keyway are DIN6885.3.
However, the depth of inner keyways for BB25-1K-K, BB25-2K-K and BB25-2GD1K-K are 0.5mm shallower than standard. So, the depth of outer race should be
0.5mm deeper. Standard inner race key and keyway for BB40-1K-K, BB40-2K-K and BB40-2GD1K-k are DIN6885.1.
５．When pressing Cam Clutch to the shaft and housing, do not press inner race or outer race separately but press them simultaneously. Do not hit Cam Clutch with
a hammer.
６．Refer to the catalog for key dimensions.
■ Lubrication
１．Cam Clutches are factory greased with Esso Beacon 325. Allowable ambient temperature range is – 30℃ to 80℃.
２．Wash out the grease when using BB, BB-1K-K, BB-2K-K types for oil baths. Refer to Cam Clutch or general catalog for recommended oil. Oil level should be the
shaft center or higher.
３．Never use lubricants with extreme-pressure additives to avoid slippage.
■ Warranty

©2019/10/01 TSUBAKIMOTO CHAIN CO. Bulletin No. 00L00TS000E
TSUBAKIMOTO CHAIN CO.
1-1, Kohtari-Kuresumi, Nagaokakyo
Kyoto 617- 0833, Japan
Website: http://tsubakimoto.com/
Global Associated Partners:
Tsubakimoto Singapore Pte. Ltd.
http://tsubaki.sg/
U.S. Tsubaki Power Transmission, LLC
http://www.ustsubaki.com/
Taiwan Tsubakimoto Co.
http://tsubakimoto.com.tw/
Tsubaki of Canada Limited
http://tsubaki.ca/
Tsubakimoto Chain (Shanghai) Co., Ltd.
http://tsubaki.cn/
Tsubaki Australia Pty. Limited
http://tsubaki.com.au/
Tsubakimoto Europe B.V.
http://tsubaki.eu/
Tsubakimoto U.K. Ltd.
http://tsubaki.eu/
Tsubakimoto Korea Co., Ltd..
http://tsubakimoto-tck.co.kr/