Environmental Approach

Against the backdrop of economic globalization and the rapid economic development of emerging nations, the depletion of various resources and environmental pollution are becoming cause for concern. With a goal of achieving Zero Emissions, Tsubaki strictly controls the chemical substances it uses based on laws and regulations in addition to hastening efforts to reduce waste and recycle.

Waste reduction and recycling

The Tsubaki Group takes a proactive approach to reducing and recycling waste. In the fiscal year ended March 31, 2017, the combined total amount of industrial and non-industrial waste emissions was 6,617 tons, representing a increase of 14.5% year-on-year. The recycling rate remained high at an annual average of 98.7%.

Waste Emission & Recycling Rate (Yearly Average)
Waste Emission & Recycling Rate (Yearly Average)

Contributing to waste reduction through eco-packaging

The Tsubaki Group is involved in efforts to reduce waste by optimizing product wrapping and packaging such as standardizing wrapping and packaging materials, making products easier to disassemble, and promoting the 3Rs (reduce, reuse, and recycle). For example, Motion Control Division employs eco packaging for compact gear motors (those under 30 kg). This new packaging method replaces the conventional system of plywood, braces, and bolts and nuts with one using only corrugated cardboard and stretch film. The new method has made a significant contribution to reducing timber usage and man-hours required to dispose of packaging waste after delivery.

Eco packaging using only corrugated cardboard and stretch film.
Eco packaging using only corrugated cardboard and stretch film.

Initiatives to reduce the use of hazardous chemical substance

Based on domestic and international legislation concerning hazardous chemical substances, The Tsubaki Group investigates substances contained in raw materials, parts, and other materials. In addition to gaining an understanding of the actual details regarding the usage of hazardous chemical substances and establishing permissible levels together with our customers, we continually strive to reduce the use of such substances.

Laws and Regulations Compliant Products
RoHS directive*1 General-purpose drive chains, Power-Lock (locking devices), couplings (shaft couplings), and reducers, other items
ELV directive*2 All components for automotive engine timing drive systems
Reach regulations*3 None
*1 An EU directive restricting the use of lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls, and polybrominated diphenyl ether as a general rule in electrical and electronic equipment.
*2 An EU directive restricting the use of lead, mercury, cadmium, and hexavalent chromium as a general rule to reduce waste from end-of-life vehicles (ELVs) and encourage appropriate disposal.
*3 Comprehensive EU regulations for the registration, evaluation, authorization, and restriction of chemical substances.

Promoting the reduction of the use of chemical substances subject to the PRTR Law

The Tsubaki Group surveys emissions of chemical substances specified by the Act on Confirmation, etc. of Release Amounts of Specific Chemical Substances in the Environment and Promotion of Improvements to the Management Thereof (known as the "PRTR Law") and works to reduce the use of such substances. In the fiscal year ended March 31, 2017, the group's annual PRTR report covered eight substances from six companies and eight plants.
At our relevant work sites, we are taking steps to reduce the use and emissions of these substances.

FYE 2017 data on chemical substances subject to the PRTR Law
Unit: kg/year
Location Substance No. Substance Name Amount Released Amount Transferred
Atmosphere Public water supply Soil On-site landfill Sewer Transferred to off-site business
Tsubakimoto Chain Kyotanabe Plant 348 1-bromopropane 2,200 0 0 0 0 2,500
Tsubakimoto Chain Saitama Plant 87 Chromium and chromium (III) compounds 83 0 0 0 0 41,000
300 Toluene


0 0 0 0 8,400
Tsubaki E&M *1 Kyoto Plant 80 Xylene 1,100 0 0 0 0 300
300 Toluene 9,700 0 0 0 0 2,800
Hyogo Plant 80 Xylene 400 0 0 0 0 500
300 Toluene 800 0 0 0 0 1,000
438 Methylnaphthalene 0.2 0 0 0 0 0
Okayama Plant 438 Methylnaphthalene 8.8 0 0 0 0 0
Tsubakimoto Bulk Systems Corp. 53 Ethylbenzene 2,500 0 0 0 0 200
80 Xylene 4,500 0 0 0 0 330
300 Toluene 1,400 0 0 0 0 100
Tsubakimoto Mayfran Inc. 53 Ethylbenzene 1,100 0 0 0 0 0
80 Xylene 1,700 0 0 0 0 0
300 Toluene 11,000 0 0 0 0 0
Tsubakimoto Iron Casting Co., Ltd. 412 Manganese and its compounds 4,928 0 0 0 0 4,928
200 Magnesium and its compounds 4,406 0 0 0 0 4,406
Total 65,826 0 0 0 0 66,464
* Tsubakimoto Custom Chain Co., Tsubakimoto Sprocket Co., and Tsubaki Yamakyu Chain Co. are outside the scope of PRTR filing.
*1 As of October 1, 2017, Tsubaki E&M Co. merged into Tsubakimoto Chain Co.

Promoting green procurement

Working together with our business partners (suppliers), we are engaged in efforts toward the effective reduction of hazardous chemical substances contained in our products. In 2006, we established "Green Procurement Guidelines" followed by "Restriction and management standards for inclusion of hazardous chemicals in procured items" in 2007. The Tsubaki Group defines detailed standards for the allowable concentration of individual chemical substances for all Tsubaki Group products containing procured items, and when necessary, request that suppliers submit a "Certificate of non-inclusion of regulated substances". Moreover, in the event that the concentration of a chemical substance in a procured item exceeds the allowable range when the results of an investigation into chemical content are analyzed, we request that the supplier provides a "Confirmation sheet for inclusion of hazardous chemicals and schedule for reduction of use". We then follow up on the issue on an ongoing basis to ensure that the matter is corrected and that improvements are made.