ProductList
- cycloidal-planetary-gear-speed-reducer
- gear-reducer
- ZQ, ZQH, ZQSH gear reducer
- The PM type cylindrical gear reducer
- The ZQA type cylindrical gear reducer
- The PJ type cylindrical gear reducer
- ZQ, ZQD high speed cylindrical gear reducer
- ZD, ZDH, ZDSH type reducer
- ZL, ZLH, ZLSH type reducer
- ZS, ZSH, ZSSH type reducer
- JZQ series gear reducer
- Gear ZLY, ZLZ hardened surface of cylindrical gear reducer JB/T8853-2001
- ZSC, ZSC (A).reduction box
- Gear ZDY, ZDZ hardened surface of cylindrical gear reducer JB/T8853-2001
- YK series conical and cylindrical gear reducer YB/T050-93
- Gear ZSY, ZSZ hardened surface of cylindrical gear reducer JB/T8853-2001
- K series conical and cylindrical gear reducer
- FDBY cone cylindrical gear reducer ZBJ19026-90
- FZLY cylindrical gear reducer ZBJ19004-88
- YN series gear reducer YB/T050-93
- HNK type circular arc gear reducer YB/T050-93
- QJY series of hoisting machinery reducer
- QJL crane vertical reducer JB/T8905.3-1999
- QJT crane set type reducer JB/T8905.4-1999
- QJD crane base type reducer JB/T8905.2-1999
- QJ type crane reducer JB/T89051-1999
- ZZL cone cylindrical gear reducer
- S series gear reducer
- DBY, DCY, DBZ, DCZ cylindrical gear reducer JB/T9002-1999
- ZDS type gear reducer JB/T5560-1991
- GS type high speed involute cylindrical gear box
- MHS, HS series of gear box
- JDX edge drive reducer JC/T878.2-2001
- The TJ315 type cylindrical gear reducer
- ZJY type shaft mounted cylindrical gear reducer JB/T 7007-1993
- ZWS series of spiral bevel gear reducer
- C a helical gear reducer
- PYZ series hardened shaft mounted speed reducer
- CR helical gear reducer
- CE two stage helical gear reducer
- ZLD, ZLDA spiral bevel gear reducer
- ZLS, ZLSA spiral bevel gear reducer
- ZLZ series of spiral bevel gear reducer
- JS series gear reducer
- NGLED gear reducer
- HD bevel gear commutator
- BZ series of spiral bevel gear steering box
- NT series of spiral bevel gear reducer
- XT series of spiral bevel gear reducer
- TH, TB high power reducer
- CHD type gear reducer motor
- Type CHM: horizontal straight gear reducer
- CH horizontal type single-phase, three-phase motor gear reducer
- Type CVD: gear reducer motor
- CVM type: straight vertical junction type gear reducer
- CV type vertical single-phase, three-phase motor gear reducer
- RC series helical (spiral bevel) steering gear box
- T series of spiral bevel gear steering box
- Z series spiral bevel gear reducer
- H helical gear box B spiral bevel gear helical gear box
- GH type roller movable teeth reducer JB/T6137-1992
- TZ series coaxial gear reducer JB/T7000-1993
- LC, LC (A) type two hardened cylinder gear vertical reducer
- LCW type horizontal level two hardened cylinder gear reducer
- DC, LDC, DCW cylindrical gear reducer
- DJC type vertical single-stage hardened cylinder gear reducer
- DSC, DZC vertical cylindrical gear reducer
- LPJ, LPB, LPP type vertical parallel shaft reducer of hard toothed surface
- FJ hardened cylinder gear reducer
- TY series coaxial gear reducer ZBJ19009-88
- Reducer ZBJI19027 with type QS
- NHD110 gear reducer
- DT series of spiral bevel gear reducer
- MC series hardened - gear speed reducer
- LTJ series transmission gear reducer
- VCYK type cone cylindrical gear reducer
- SD gear side mixer
- LC coaxial gear reducer
- TC cross spiral bevel gear reversing reducer
- QSJ series of cylindrical gear reducer
- PC series gear reducer
- SPJ-800 type reducer
- TYL series hardened cylinder gear reducer
- XT series gear reducer
- DBS series of unilateral double driving mill reducer
- ZJ axial cylindrical gear reducer JB/T 7337-1994
- ZL2 (Ⅱ 1 Chaplygin 2) cylindrical gear two stage reducer
- SP series conical gear commutator
- B180G type vertical cylinder gear reducer
- AT series spiral bevel gear reducer
- TE, TEK cylindrical gear reducer
- TF, TFK conical, cylindrical gear reducer
- QS, QSE, LG type "three in one" (jb-t9003-2004).
- QSC type "three in one" (jb-t9003-2004).
- PV series universal gear box
- ZD80, ZD90, ZD100 series helical gear reducer
- ZD (H) MCD80, 90, 100 series of cylindrical gear reducer
- The TMG suspension gear reducer
- SXH/B high power gear box
- DB spiral bevel gear DH parallel shaft helical gear reducer
- PJT series flat double gear box
- XHXB helical bevel gear series high power reducer
- MCD series gear reducer
- TEX type gear reducer
- TK series gear reducer
- TM series gear reducer
- JH/B series of industrial gear box
- ZFY, ZXY type of hardened cylinder gear reducer
- TD9000 series of hardened gear reducer
- TW, TWC series of shaft mounted speed reducer
- TA, TC9000 type of hardened gear reducer
- SL series high power gear box
- The PR module type gear reducer
- DSZC (D) universal speed reducer
- SKH type circular arc gear speed reducer
- ZSC (D) type high speed reducer
- LPYB-J, LSYB-J type vertical parallel axis gear reducer
- LFY type two stage vertical flange reducer of hard toothed surface
- GOJ type of hardened gear reducer
- JPT type of involute cylindrical gear reducer (JB-T10244-2001)
- KPTH type of involute cylindrical gear reducer JB/T10243 - 2001
- The B315 type cylindrical gear reducer
- AJ48 gear reducer
- GY type high speed arc cylindrical gear speed reducer increase (decrease)
- CF series conical cylindrical gear reducer
- TZ type three level vertical gear reducer
- TCJ series of cylindrical gear reducer
- QY hardened gear reducer for crane
- planet-gear-speed-reducer
- Gear-motor
- Worm-gear-reducer
- Harmonic reducer
- elevator
- Stepless reducer
- Special-reducer
- clutch
- support
- Three-reduction-box
- Belt-reduction-box
- Enterprise standard reducer (device)
- coupler-coupling
- Precision reducer
- Combined speed reducer
- Taiwan-foreign-reducer
- arrester
- motorized pulleys ;
- Electric
- Backstop
- asynchronous-motor
- synchronous-motor
- bearing enelosure; bearing oil seal ;
- Reducer fittings
- Lubricating oil, lubricating grease
Current positionReducerHome>> gear-reducer >> QJL crane vertical reducer JB/T8905.3-1999Suppliers
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Introduction
Shanghai letter transmission Machinery Co., Ltd. 产品样本
Chinese Name:上海枫信传动机械有限公司
Recommended for:
Shanghai letter transmission Machinery Co., the company has two production bases in Shanghai and Shandong, covering a total area of 300000 m2, a phase of the project has a modern standard factory building 60000 m2. The company leading product in a modular precision reducer, paral
Chinese Name:上海枫信传动机械有限公司
Recommended for:
Shanghai letter transmission Machinery Co., the company has two production bases in Shanghai and Shandong, covering a total area of 300000 m2, a phase of the project has a modern standard factory building 60000 m2. The company leading product in a modular precision reducer, paral
Taixing Weida reducer Co., Ltd. 产品样本
Chinese Name:泰兴市伟达减速机有限公司
Recommended for:
Taixing Weida reducer Co. Ltd. located in the Soviet Union in the earth ---- Taixing City, the geographical position is superior, the traffic is very convenient. The company mainly produces cylindrical gear reducer, hardened, Hardened reducer, circular cylindrical worm reducer, p
Chinese Name:泰兴市伟达减速机有限公司
Recommended for:
Taixing Weida reducer Co. Ltd. located in the Soviet Union in the earth ---- Taixing City, the geographical position is superior, the traffic is very convenient. The company mainly produces cylindrical gear reducer, hardened, Hardened reducer, circular cylindrical worm reducer, p
Taixing Xiangrui Transmission Machinery Manufacturing Co., Ltd. 产品样本
Chinese Name:泰兴市祥瑞传动机械制造有限公司
Recommended for:
"Taixing Hongrui reducer manufacturing Co., Ltd." is located in a "reducer town" reputation of Taixing City, Jiangsu province. Our company actively pursuing a "development is the hard truth" principle, is willing to join hands, create brilliant with colleagues from all walks of l
Chinese Name:泰兴市祥瑞传动机械制造有限公司
Recommended for:
"Taixing Hongrui reducer manufacturing Co., Ltd." is located in a "reducer town" reputation of Taixing City, Jiangsu province. Our company actively pursuing a "development is the hard truth" principle, is willing to join hands, create brilliant with colleagues from all walks of l
Shandong Liuhang reducer Co., Ltd. 产品样本
Chinese Name:山东柳杭减速机有限公司
Recommended for:
Shandong Boshan reducer factory is located in the Boshan District of Zibo City, east of Road 205, North Jiqinggaosu Road, West foreshore Bo highway only 0.5 kilometers, traffic is convenient. Enterprises have been thirty years of plant history, covers an area of 30000 square mete
Chinese Name:山东柳杭减速机有限公司
Recommended for:
Shandong Boshan reducer factory is located in the Boshan District of Zibo City, east of Road 205, North Jiqinggaosu Road, West foreshore Bo highway only 0.5 kilometers, traffic is convenient. Enterprises have been thirty years of plant history, covers an area of 30000 square mete
Jiangsu Hualong decelerator Chengdu Sales Corporation 产品样本
Chinese Name:江苏华隆减速机成都销售总公司
Recommended for:
Jiangsu Hualong decelerator production experience, strong technical force, advanced testing equipment, advanced testing equipment, product stability, quality and reliable. The "people-oriented, technology leading, quality first, the user first" is the company's service tenet, is
Chinese Name:江苏华隆减速机成都销售总公司
Recommended for:
Jiangsu Hualong decelerator production experience, strong technical force, advanced testing equipment, advanced testing equipment, product stability, quality and reliable. The "people-oriented, technology leading, quality first, the user first" is the company's service tenet, is
Hubei province Xianning three Electromechanical Industry Co., Ltd. 产品样本
Chinese Name:湖北省咸宁三合机电制业有限责任公司
Recommended for:
Hubei province Xianning three Electromechanical Industry Co., Ltd. was founded in 1965, is located in the famous Chinese sweet scented osmanthus town --- Xianning City, Hubei province. Is the State Administration of machinery industry and the Ministry of water resources sentinel
Chinese Name:湖北省咸宁三合机电制业有限责任公司
Recommended for:
Hubei province Xianning three Electromechanical Industry Co., Ltd. was founded in 1965, is located in the famous Chinese sweet scented osmanthus town --- Xianning City, Hubei province. Is the State Administration of machinery industry and the Ministry of water resources sentinel
Jiangsu Zhenxiang reducer Co., Ltd. 产品样本
Chinese Name:江苏振翔减速机有限公司
Recommended for:
Zhenxiang reducer reducer group for domestic production base - Jiangsu Taixing one of the largest manufacturers, the group under the jurisdiction of 23 to non - standard, standard reducer product consulting, sales, service based branches, the Group R & D, manufacturing, trans
Chinese Name:江苏振翔减速机有限公司
Recommended for:
Zhenxiang reducer reducer group for domestic production base - Jiangsu Taixing one of the largest manufacturers, the group under the jurisdiction of 23 to non - standard, standard reducer product consulting, sales, service based branches, the Group R & D, manufacturing, trans
Jiangsu Aode reducer Co. Ltd. 产品样本
Chinese Name:江苏奥德减速机有限公司
Recommended for:
Jiangsu AoDe Reducer Co..,Ltd is a professional reduction gears manufacturer. Since its establishment,thecompany has been introducing new equipment and technologies , as well as the finest talents for products developing and research. The management system of ISO9002 guarantee
Chinese Name:江苏奥德减速机有限公司
Recommended for:
Jiangsu AoDe Reducer Co..,Ltd is a professional reduction gears manufacturer. Since its establishment,thecompany has been introducing new equipment and technologies , as well as the finest talents for products developing and research. The management system of ISO9002 guarantee
Shanghai Xiao Yue mechanical equipment Co., Ltd. 产品样本
Chinese Name:上海骁跃机械设备有限公司
Recommended for:
Shanghai Xiao Yue machine equipment Co., Ltd. is a professional production, reduction gear transmission equipment company, took the lead through the ISO9001:2000 international quality system certification, the sales network covering the whole country. Specializing in the producti
Chinese Name:上海骁跃机械设备有限公司
Recommended for:
Shanghai Xiao Yue machine equipment Co., Ltd. is a professional production, reduction gear transmission equipment company, took the lead through the ISO9001:2000 international quality system certification, the sales network covering the whole country. Specializing in the producti
Beijing Huadong reducer manufacturing Co., Ltd. 产品样本
Chinese Name:北京华东减速机制造有限公司
Recommended for:
Huadong reducer manufacturing Co., the company formerly known as East reducer factory, Taixing reducer factory three, is a collection of science, industry and trade, one of the Limited by Share Ltd, founded in 1986, is located in the Beijing Shanghai Expressway and bordering Taix
Chinese Name:北京华东减速机制造有限公司
Recommended for:
Huadong reducer manufacturing Co., the company formerly known as East reducer factory, Taixing reducer factory three, is a collection of science, industry and trade, one of the Limited by Share Ltd, founded in 1986, is located in the Beijing Shanghai Expressway and bordering Taix
Jiangsu Taixing Xinxing Transmission Machinery Co., Ltd. 产品样本
Chinese Name:江苏省泰兴市鑫星传动机械有限公司
Recommended for:
Specializing in the production of all kinds of reducer, accessories and various couplings. Quality and cheap!
Chinese Name:江苏省泰兴市鑫星传动机械有限公司
Recommended for:
Specializing in the production of all kinds of reducer, accessories and various couplings. Quality and cheap!
Tianjin No.2 reducer factory 产品样本
Chinese Name:天津市第二减速机厂.
Recommended for:
The main products are: hard tooth surface cone, cylindrical gear reducer; Ordinary cylindrical gear reducer; Planetary pendulum needle wheel speed reducer; Gear motor; Special reducer for rolling mill and other series products. And dedicated to the user design, manufacture of all
Chinese Name:天津市第二减速机厂.
Recommended for:
The main products are: hard tooth surface cone, cylindrical gear reducer; Ordinary cylindrical gear reducer; Planetary pendulum needle wheel speed reducer; Gear motor; Special reducer for rolling mill and other series products. And dedicated to the user design, manufacture of all
Taixing Su Tai deceleration mechanism Manufacturing Co., LTD. 产品样本
Chinese Name:泰兴市苏泰减速机制造有限公司.
Recommended for:
The enterprise information is being sorted out! The enterprise information is being sorted out!
Chinese Name:泰兴市苏泰减速机制造有限公司.
Recommended for:
The enterprise information is being sorted out! The enterprise information is being sorted out!
Taixing Huadong reducer manufacturing Co., Ltd. Sales Department 产品样本
Chinese Name:泰兴市华东减速机制造有限公司销售部
Recommended for:
Taixing Huadong reducer manufacturing Co., the company formerly known as Jiangsu Huadong reducer factory, Taixing reducer factory three, is a collection of science, industry and trade, one of the Limited by Share Ltd, founded in 1986, is located in the Beijing Shanghai Expressway
Chinese Name:泰兴市华东减速机制造有限公司销售部
Recommended for:
Taixing Huadong reducer manufacturing Co., the company formerly known as Jiangsu Huadong reducer factory, Taixing reducer factory three, is a collection of science, industry and trade, one of the Limited by Share Ltd, founded in 1986, is located in the Beijing Shanghai Expressway
Shanghai Lianming Transmission Machinery Co., Ltd. 产品样本
Chinese Name:上海联铭传动机械有限公司
Recommended for:
Ming Transmission Machinery Co., Ltd. Shanghai Alliance is a professional cut , gearbox design and manufacture of high-tech enterprise , passed ISO9001: 2000 international quality system certification , sales outlets nationwide coverage. The company has introduced advanced techno
Chinese Name:上海联铭传动机械有限公司
Recommended for:
Ming Transmission Machinery Co., Ltd. Shanghai Alliance is a professional cut , gearbox design and manufacture of high-tech enterprise , passed ISO9001: 2000 international quality system certification , sales outlets nationwide coverage. The company has introduced advanced techno
Shanghai Nengwei reducer manufacturing Co., Ltd. 产品样本
Chinese Name:上海能蔚减速机制造有限公司
Recommended for:
Shanghai 能蔚 reducer Co., Ltd. is a scientific research, production, sales and integration of professional manufacturers, and in the same industry in the first through the ISO9001 international quality system certification. The company has Germany KLINGEINBERG high precision worm
Chinese Name:上海能蔚减速机制造有限公司
Recommended for:
Shanghai 能蔚 reducer Co., Ltd. is a scientific research, production, sales and integration of professional manufacturers, and in the same industry in the first through the ISO9001 international quality system certification. The company has Germany KLINGEINBERG high precision worm
Taixing reducer 产品样本
Chinese Name:泰星减速机
Recommended for:
The company does not provide introduction to the company not to provide introduction to the company not to provide introduction
Chinese Name:泰星减速机
Recommended for:
The company does not provide introduction to the company not to provide introduction to the company not to provide introduction
Zhejiang Tongli heavy gear Limited by Share Ltd 产品样本
Chinese Name:浙江通力重型齿轮股份有限公司
Recommended for:
Zhejiang Tongli heavy gear Limited by Share Ltd (the original full reducer Co. Ltd.) is a company engaged in general reducer, wind power gear box and gear box R & D, manufacturing, sales of professional firms. Products were rated as brand-name products in Zhejiang Province, t
Chinese Name:浙江通力重型齿轮股份有限公司
Recommended for:
Zhejiang Tongli heavy gear Limited by Share Ltd (the original full reducer Co. Ltd.) is a company engaged in general reducer, wind power gear box and gear box R & D, manufacturing, sales of professional firms. Products were rated as brand-name products in Zhejiang Province, t
Hebei Tianyi reduction equipment Co. Ltd. 产品样本
Chinese Name:河北天一减变速设备有限公司
Recommended for:
Hebei Tianyi reduction and transmission equipment Co., Ltd. is a company engaged in the design, manufacture of high-tech companies, the company's main business is: the production of a variety of reducer, cycloid reducer, gear, screw lift, couplings, and non - standard design, man
Chinese Name:河北天一减变速设备有限公司
Recommended for:
Hebei Tianyi reduction and transmission equipment Co., Ltd. is a company engaged in the design, manufacture of high-tech companies, the company's main business is: the production of a variety of reducer, cycloid reducer, gear, screw lift, couplings, and non - standard design, man
Taixing Tengfei reducer factory 产品样本
Chinese Name:泰兴市腾飞减速机厂
Recommended for:
Takeoff speed reducer Co. Ltd. is specialized for lifting, metallurgy, mine, chemical industry, papermaking, pharmaceutical and other industries supporting the production of hardened, non-standard hardened, soft tooth surface, hardened, cycloidal pin wheel, electric roller reduce
Chinese Name:泰兴市腾飞减速机厂
Recommended for:
Takeoff speed reducer Co. Ltd. is specialized for lifting, metallurgy, mine, chemical industry, papermaking, pharmaceutical and other industries supporting the production of hardened, non-standard hardened, soft tooth surface, hardened, cycloidal pin wheel, electric roller reduce
Jiangsu Zhenxiang reducer Co., Ltd. 产品样本
Chinese Name:江苏振翔减速机有限公司
Recommended for:
Zhenxiang reducer reducer group for domestic production base - Jiangsu Taixing one of the largest manufacturers, the group under the jurisdiction of 23 to non - standard, standard reducer product consulting, sales, service based branches, the Group R & D, manufacturing, transmiss
Chinese Name:江苏振翔减速机有限公司
Recommended for:
Zhenxiang reducer reducer group for domestic production base - Jiangsu Taixing one of the largest manufacturers, the group under the jurisdiction of 23 to non - standard, standard reducer product consulting, sales, service based branches, the Group R & D, manufacturing, transmiss
Shanghai Fengxin Transmission Machinery Co., Ltd. 产品样本
Chinese Name:上海枫信传动机械有限公司
Recommended for:
Shanghai Fengxin Transmission Machinery Co., Ltd. has two production bases in Shanghai and Shandong, with a total area of 300,000 square meters. The first phase of the project has a modern standard factory building of 60,000 square meters. The company's main product
Chinese Name:上海枫信传动机械有限公司
Recommended for:
Shanghai Fengxin Transmission Machinery Co., Ltd. has two production bases in Shanghai and Shandong, with a total area of 300,000 square meters. The first phase of the project has a modern standard factory building of 60,000 square meters. The company's main product
Tianjin decelerating Machinery Co., Ltd. 产品样本
Chinese Name:天津减速机械有限公司
Recommended for:
Tianjin decelerating Machinery Co. Ltd. is located in Tianjin Huayuan Industrial Park, Tianjin deceleration robot is proud country of large enterprises. In the company leadership and the efforts of the staff, after 20 years of careful management, has become the head become the in
Chinese Name:天津减速机械有限公司
Recommended for:
Tianjin decelerating Machinery Co. Ltd. is located in Tianjin Huayuan Industrial Park, Tianjin deceleration robot is proud country of large enterprises. In the company leadership and the efforts of the staff, after 20 years of careful management, has become the head become the in
Taixing Kangya reducer manufacturing Co., Ltd 产品样本
Chinese Name:泰兴市康亚减速机制造有限公司
Recommended for:
Kangya Taixing Taixing Reducer Co., Ltd. is specialized in producing all kinds of gear manufacturers, Ministry of Chemical Industry sentinel production enterprises reducer. Strong technical force, advanced detection equipment. Existing fixed assets of 35 million yuan, 230 employe
Chinese Name:泰兴市康亚减速机制造有限公司
Recommended for:
Kangya Taixing Taixing Reducer Co., Ltd. is specialized in producing all kinds of gear manufacturers, Ministry of Chemical Industry sentinel production enterprises reducer. Strong technical force, advanced detection equipment. Existing fixed assets of 35 million yuan, 230 employe
Shanghai Nuoguang machinery Co., Ltd. 产品样本
Chinese Name:上海诺广机械有限公司
Recommended for:
Shanghai Connaught large machinery Co., Ltd. specializing in the production of gear reducer, K series cone - cylindrical gear reducer
Chinese Name:上海诺广机械有限公司
Recommended for:
Shanghai Connaught large machinery Co., Ltd. specializing in the production of gear reducer, K series cone - cylindrical gear reducer
Wuqiao County Jianhao Deceleration Machinery Sales Co., Ltd 产品样本
Chinese Name:吴桥县建豪减速机械销售有限公司
Recommended for:
Wuqiao County Jianhao Deceleration Machinery Sales Co., Ltd
Chinese Name:吴桥县建豪减速机械销售有限公司
Recommended for:
Wuqiao County Jianhao Deceleration Machinery Sales Co., Ltd
Shenyang Aojie reduction unit Co., Ltd 产品样本
Chinese Name:沈阳奥杰减变速机有限公司
Recommended for:
Shenyang ORJ by gearbox Co., Ltd. is a company engaged in domestic reducer development, manufacturing and marketing of professional companies. The new modular products, advanced testing equipment and complete manufacturing processes and equipment to make products with high levels
Recommended Products
Chinese Name:沈阳奥杰减变速机有限公司
Recommended for:
Shenyang ORJ by gearbox Co., Ltd. is a company engaged in domestic reducer development, manufacturing and marketing of professional companies. The new modular products, advanced testing equipment and complete manufacturing processes and equipment to make products with high levels
Recommended Products
Shanghai YinTong Reducer Company CO., LTD 产品样本
Chinese Name:上海寅通减速机总厂
Recommended for:
Shanghai Yin Tong Reducer Factory is specialized in producing Yin 021-36173321 pass card reducer, motor and other transmission equipment, professional production capacity at home. Production technology and market share based world leader in the international field of power transm
Chinese Name:上海寅通减速机总厂
Recommended for:
Shanghai Yin Tong Reducer Factory is specialized in producing Yin 021-36173321 pass card reducer, motor and other transmission equipment, professional production capacity at home. Production technology and market share based world leader in the international field of power transm
Jiangsu Xinglong reducer Co. Ltd. 产品样本
Chinese Name:江苏太兴隆减速机有限公司
Recommended for:
Jiangsu Xinglong reducer Co., Ltd. specializing in the production of gear reducer, QY hardened gear reducer for crane
Chinese Name:江苏太兴隆减速机有限公司
Recommended for:
Jiangsu Xinglong reducer Co., Ltd. specializing in the production of gear reducer, QY hardened gear reducer for crane