Zero-Max調(diào)速器 SC020

 2018年Zero-Max工廠上海航歐中國(guó)區(qū)銷(xiāo)售

上海航歐銷(xiāo)售Zero-Max聯(lián)軸器Zero-Max接頭Zero-Max齒輪箱Zero-Max制動(dòng)器Zero-Max轉(zhuǎn)向器Zero-Max輪轂Zero-Max調(diào)速器Zero-Max夾緊器Zero-Max夾緊裝置Zero-Max驅(qū)動(dòng)器Zero-Max漲緊套Zero-Max變速箱Zero-Max限制器Zero-Max襯套Zero-Max聯(lián)軸器彈性塊

 2018年Zero-Max工廠上海航歐中國(guó)區(qū)銷(xiāo)售

上海航歐銷(xiāo)售Zero-Max聯(lián)軸器Zero-Max接頭Zero-Max齒輪箱Zero-Max制動(dòng)器Zero-Max轉(zhuǎn)向器Zero-Max輪轂Zero-Max調(diào)速器Zero-Max夾緊器Zero-Max夾緊裝置Zero-Max驅(qū)動(dòng)器Zero-Max漲緊套Zero-Max變速箱Zero-Max限制器Zero-Max襯套Zero-Max聯(lián)軸器彈性塊

上海航歐機(jī)電設(shè)備有限公司從事進(jìn)口機(jī)電設(shè)備、儀器儀表等備品備件的銷(xiāo)售，是經(jīng)營(yíng)世界各地進(jìn)口設(shè)備機(jī)電配件的企業(yè)。上海航歐公司與眾多品牌電子元件供應(yīng)商建立有良好的合作關(guān)系，在歐美、日本等地形成了穩(wěn)定的供應(yīng)網(wǎng)絡(luò)，良好的供應(yīng)商關(guān)系和多年的行業(yè)經(jīng)驗(yàn)，使我們?cè)趦r(jià)格及貨期上有優(yōu)勢(shì)。

上海航歐銷(xiāo)售Zero-Max聯(lián)軸器Zero-Max接頭Zero-Max齒輪箱Zero-Max制動(dòng)器Zero-Max轉(zhuǎn)向器Zero-Max輪轂Zero-Max調(diào)速器Zero-Max夾緊器Zero-Max夾緊裝置Zero-Max驅(qū)動(dòng)器Zero-Max漲緊套Zero-Max變速箱Zero-Max限制器Zero-Max襯套Zero-Max聯(lián)軸器彈性塊

 SC005

 SD005

上海航歐機(jī)電設(shè)備有限公司成立于2006年，專(zhuān)業(yè)從事進(jìn)口機(jī)電設(shè)備、儀器儀表等備品備件的銷(xiāo)售并為客戶(hù)提供工業(yè)產(chǎn)品選型，專(zhuān)業(yè)技術(shù)支持，現(xiàn)場(chǎng)安裝調(diào)試及售后維護(hù)維修等服務(wù)，是經(jīng)營(yíng)世界各地進(jìn)口設(shè)備機(jī)電配件的企業(yè)。上海航歐公司與眾多品牌電子元件供應(yīng)商建立有良好的合作關(guān)系，在歐美、日本等地形成了穩(wěn)定的供應(yīng)網(wǎng)絡(luò)，良好的供應(yīng)商關(guān)系和多年的行業(yè)經(jīng)驗(yàn)，使我們?cè)趦r(jià)格及貨期上有優(yōu)勢(shì)。經(jīng)銷(xiāo)產(chǎn)品供應(yīng)的行業(yè)涉及冶金、鋼鐵、石化、能源、集裝箱碼頭、汽車(chē)、水利、造紙、電廠、紡織、注塑、橡膠等。我們熱忱地希望盡我們的努力，力爭(zhēng)優(yōu)惠的產(chǎn)品價(jià)格，供貨周期以及服務(wù)質(zhì)量，能夠?yàn)槟鉀Q進(jìn)口備件方面的問(wèn)題。進(jìn)口產(chǎn)品主要有：傳感器，測(cè)速電機(jī)，接近開(kāi)關(guān)，電子尺，編碼器，控制器、分析儀，光纖，光柵，插裝閥，電纜，拖鏈，分配器，馬達(dá)，減速機(jī)，繼電器、緩沖器和進(jìn)口五金等

3JS   現(xiàn)貨查詢(xún)上海航歐                            T B WOODS

283-350   現(xiàn)貨查詢(xún)上海航歐                            WAGO

L24MC610-A1B4C7G3     現(xiàn)貨查詢(xún)上海航歐                            ACOPIAN

AL-01/M8X120         現(xiàn)貨查詢(xún)上海航歐                            OLEOSTAR

SD5/1-N(JG2-50)/18L       現(xiàn)貨查詢(xún)上海航歐                            OLEOSTAR

VODL 34/TS.S.p7/VRR     現(xiàn)貨查詢(xún)上海航歐                            OLEOSTAR

CHP306A-120  現(xiàn)貨查詢(xún)上海航歐                            NKE

220C-0C   現(xiàn)貨查詢(xún)上海航歐                   225A-34-600-OC-F-Y-T     ACCU-CODER

RPEC-LBN         現(xiàn)貨查詢(xún)上海航歐                            SUN

RS400P1-1-5BP3016R 30°     現(xiàn)貨查詢(xún)上海航歐                            TOSOKU

DPP02-0-20J16RCB 15°         現(xiàn)貨查詢(xún)上海航歐                            TOSOKU

RS400P3-3-8BP3016R 30°     現(xiàn)貨查詢(xún)上海航歐                            TOSOKU

RS400P1-1-4BP3016R 30°     現(xiàn)貨查詢(xún)上海航歐                            TOSOKU

SVTE-350-1/4-D6     現(xiàn)貨查詢(xún)上海航歐                            LINCOLN

RGH20B30L00A       現(xiàn)貨查詢(xún)上海航歐                            RENISHAW

EL060-53300    現(xiàn)貨查詢(xún)上海航歐                            NAMCO

CL-2-SC-50FT   現(xiàn)貨查詢(xún)上海航歐                            CARRLANE

DP/10/P   現(xiàn)貨查詢(xún)上海航歐         974318-3          Solartron

BFK458-25        現(xiàn)貨查詢(xún)上海航歐         00396288                   INTORQ

IPV-4-20471     現(xiàn)貨查詢(xún)上海航歐                            voith

Wilcoxon 793VR       現(xiàn)貨查詢(xún)上海航歐                            MEGGITT

1672         現(xiàn)貨查詢(xún)上海航歐                            BK Precision

ORT-RG003530030 現(xiàn)貨查詢(xún)上海航歐                            ORTMAN

ORT-TS533511000   現(xiàn)貨查詢(xún)上海航歐                            ORTMAN

GYCAT-600-S/S-M-M2P-CN-BR        現(xiàn)貨查詢(xún)上海航歐         S/N97933P-08X07             SANTEST

96744854(配SN987958380000泵使用)         現(xiàn)貨查詢(xún)上海航歐                            HILGE

VPRF-A3-500BarS-4 現(xiàn)貨查詢(xún)上海航歐                            VALCOM

EM1-1-1024-I  現(xiàn)貨查詢(xún)上海航歐                            US DIGITAL

E5-1024-197-I-D-D-D-B   現(xiàn)貨查詢(xún)上海航歐                            US DIGITAL

QB2TFIC003S305S875+R0006-BS680+DSY003S875        現(xiàn)貨查詢(xún)上海航歐                            PROPORTION-AIR

T6-A         現(xiàn)貨查詢(xún)上海航歐                            PHARES ELECTRO

ALN-111-2 SER.NO:0502108   現(xiàn)貨查詢(xún)上海航歐                            KANSAI

GYDC-03A series (S/N:83860C andS/N:84061C)     現(xiàn)貨查詢(xún)上海航歐                   GYDC-051-D2D-R4-1350-Z75-T142-BD/WB1R67-24S         SANTEST

119436     現(xiàn)貨查詢(xún)上海航歐                            WILLIAMS

GA4175-06       現(xiàn)貨查詢(xún)上海航歐                            ELTROMAT

IE2-WE1R 100 L      現(xiàn)貨查詢(xún)上海航歐         131587500111506            VEM

CSH-20N         現(xiàn)貨查詢(xún)上海航歐                   CS-20 10CMM*45mmAq*0.5kw     CleanAirTech

FF4615-KDM    現(xiàn)貨查詢(xún)上海航歐                            PIZZATO

MVD801K-02-10A DC110V      現(xiàn)貨查詢(xún)上海航歐                            KONAN

M3LS-1016-316        現(xiàn)貨查詢(xún)上海航歐                            Beswick

M5LS-1008-1-316    現(xiàn)貨查詢(xún)上海航歐                            Beswick

2960.70.125.080     現(xiàn)貨查詢(xún)上海航歐                            FIBRO

2487.12.00170.015 現(xiàn)貨查詢(xún)上海航歐                            FIBRO

2487.12.01000.050.1      現(xiàn)貨查詢(xún)上海航歐                            FIBRO

KP36  060-110891 現(xiàn)貨查詢(xún)上海航歐                            DANFOSS

CSE800004R+049    現(xiàn)貨查詢(xún)上海航歐                            GIOVENZANA

10J   現(xiàn)貨查詢(xún)上海航歐                            T B WOODS

B1.5-11-NBR    現(xiàn)貨查詢(xún)上海航歐                            ANVER

W2YV-AAY-R2  現(xiàn)貨查詢(xún)上海航歐                            M-SYSTEM

LZT036     現(xiàn)貨查詢(xún)上海航歐                            HACH

E40-H8-1000-3-N-24        現(xiàn)貨查詢(xún)上海航歐                            AUTONICS

BES 516-3021-G-E4-C-PU-05   現(xiàn)貨查詢(xún)上海航歐                            BALLUFF

V50.1 A11 T12 90°         現(xiàn)貨查詢(xún)上海航歐                            TUNKERS

BSR3-S3   現(xiàn)貨查詢(xún)上海航歐                            NISSYO

HA180-4A2     現(xiàn)貨查詢(xún)上海航歐                            HUMPHREY

PC420ATP-10-EX     現(xiàn)貨查詢(xún)上海航歐                            WILCOXON

PF-208-UEV      現(xiàn)貨查詢(xún)上海航歐                   PFE-15-1.0        VOGEL

RP20010-40/1/A/1/N       現(xiàn)貨查詢(xún)上海航歐         077050147       RP200/0-40/1/C/1/N        SPECKEN DRUMAG

SC300-2   現(xiàn)貨查詢(xún)上海航歐                            ACE

10.05.02.00069        現(xiàn)貨查詢(xún)上海航歐                            SCHMALZ

1900-0710-31  現(xiàn)貨查詢(xún)上海航歐                   1900071032     ATLAS COPCO

3J12 現(xiàn)貨查詢(xún)上海航歐                            T B WOODS

BM15HF 150Nm 400Ac 現(xiàn)貨查詢(xún)上海航歐                            SEW

CSG-4232-NB1-HC-A240 現(xiàn)貨查詢(xún)上海航歐                            VERSA

UN-50       現(xiàn)貨查詢(xún)上海航歐                            MUTOH

MTN/1185QW-10    現(xiàn)貨查詢(xún)上海航歐                            Monitran

WE-690E  現(xiàn)貨查詢(xún)上海航歐                            TRIAD

WE-500E 220VAC     現(xiàn)貨查詢(xún)上海航歐                            TRIAD

GAX1011A        現(xiàn)貨查詢(xún)上海航歐                            LOVATO

GA025A   現(xiàn)貨查詢(xún)上海航歐                            LOVATO

KG80 T103/D-A094STM   現(xiàn)貨查詢(xún)上海航歐                            K&N

KG64 T103/D-A287KL11  現(xiàn)貨查詢(xún)上海航歐                            K&N

691.95400119 現(xiàn)貨查詢(xún)上海航歐                   520.954S021801      HUBA CONTROL

CODE 88J          現(xiàn)貨查詢(xún)上海航歐                            NORGREN

234-13180-2    現(xiàn)貨查詢(xún)上海航歐                            LINCOLN

BX50-TCT-K338 進(jìn)出口接手組      現(xiàn)貨查詢(xún)上海航歐                            NIKKISO EIKO

1A488N    現(xiàn)貨查詢(xún)上海航歐                            DAYTON

5600-90A 現(xiàn)貨查詢(xún)上海航歐         49600-90          ECLIPSE

BX50-TCT-K120        現(xiàn)貨查詢(xún)上海航歐                            NIKKISO EIKO

BX50-TCT-K338        現(xiàn)貨查詢(xún)上海航歐                            NIKKISO EIKO

STS-1220-AP3  現(xiàn)貨查詢(xún)上海航歐                            H2W

7.759 999 6      現(xiàn)貨查詢(xún)上海航歐                            MAHLE

547880     現(xiàn)貨查詢(xún)上海航歐                            SAMES

684 319 68       現(xiàn)貨查詢(xún)上海航歐                            WERMA

684 319 75       現(xiàn)貨查詢(xún)上海航歐                            WERMA

680 859 75       現(xiàn)貨查詢(xún)上海航歐                            WERMA

E6-10000-1000-IE-D-H-M-3     現(xiàn)貨查詢(xún)上海航歐                            US DIGITAL

DISK-2-10000-1000-IE      現(xiàn)貨查詢(xún)上海航歐                            US DIGITAL

PA23SY 400bar 4-20mA 8-32V 電氣連接：DIN43650 壓力連接：G1/4外螺紋        現(xiàn)貨查詢(xún)上海航歐                            KELLER

E3-10000-1000-IE-H-D-3         現(xiàn)貨查詢(xún)上海航歐                            US DIGITAL

424A17A100B 現(xiàn)貨查詢(xún)上海航歐                            ELOBAU

424A11A120B 現(xiàn)貨查詢(xún)上海航歐                            ELOBAU

DFC1410-01          現(xiàn)貨查詢(xún)上海航歐                            SYRON

AK6 C3 CH 12e         現(xiàn)貨查詢(xún)上海航歐                            SCAIME

GYCAT4-200-S/S-M-M2PN-CN-AR   現(xiàn)貨查詢(xún)上海航歐                            SANTEST

8602C3-751     現(xiàn)貨查詢(xún)上海航歐         245944              STAHL

NEA504–110V–50/60 Hz     現(xiàn)貨查詢(xún)上海航歐                            NETTER

GSA 12-S4        現(xiàn)貨查詢(xún)上海航歐         314299              WITT

GEX 12P-S4     現(xiàn)貨查詢(xún)上海航歐         314328              WITT

RH 3 V      現(xiàn)貨查詢(xún)上海航歐                            HAWE

9J     現(xiàn)貨查詢(xún)上海航歐                            T B WOODS

H20DB-25-SS-500-ABZ-15V/OCR-SCS18-S        現(xiàn)貨查詢(xún)上海航歐         924-01039-1392                BEI

KUI-B/2/M/200/UA/200/UA    現(xiàn)貨查詢(xún)上海航歐         264674              WOERNER

990-017-007    現(xiàn)貨查詢(xún)上海航歐                            SUN

VSW2-02-4-20.0MPaRR-VT020MPGC2   現(xiàn)貨查詢(xún)上海航歐                            VALCOM

RHD08L0.5BOMDCF        現(xiàn)貨查詢(xún)上海航歐                            PARKER

CA10 PC4718-2FS2/S00V750D         現(xiàn)貨查詢(xún)上海航歐                            K&N

NM01HBA-M   現(xiàn)貨查詢(xún)上海航歐         084527              EUCHNER

GMG-B.B/4P/C/0/0/08/08/0/3/0    現(xiàn)貨查詢(xún)上海航歐         248209              WOERNER

GM–204–04–A4K–DD–B       現(xiàn)貨查詢(xún)上海航歐                            switzer

RU12        現(xiàn)貨查詢(xún)上海航歐                            RS

RU15       現(xiàn)貨查詢(xún)上海航歐                            RS

V 50.1 A42 T12 135 現(xiàn)貨查詢(xún)上海航歐                            TUNKERS

TAF-T11575R   現(xiàn)貨查詢(xún)上海航歐                            SAMWHA

LHP035028, 412 11945 025, 220V DC     現(xiàn)貨查詢(xún)上海航歐                            KENDRION

FC 30-2B  現(xiàn)貨查詢(xún)上海航歐                            SAER ELETTROPOMPE

2208e/CC/VH/LH/TC/RF/XX/2XX/XXX/XXXX/XXXXX         現(xiàn)貨查詢(xún)上海航歐                            EUROTHERM

N2-4-12X9-BK-20M         現(xiàn)貨查詢(xún)上海航歐                            NITTA

N2-4-12X9-MW-20M      現(xiàn)貨查詢(xún)上海航歐                            NITTA

Mot 80A-4 B5 kW0,55 230/400       現(xiàn)貨查詢(xún)上海航歐                            MOTIVE

MFS103KHC     現(xiàn)貨查詢(xún)上海航歐                            ZIMMER

33180-02 現(xiàn)貨查詢(xún)上海航歐                            Norelem

703041-181-200-25/000 現(xiàn)貨查詢(xún)上海航歐         00448884                   JUMO

PI 8330 DRG 40        現(xiàn)貨查詢(xún)上海航歐         77718802                   MAHLE

ST6-115-T1-B0-0-2-0-0-10R2   現(xiàn)貨查詢(xún)上海航歐                            WADDINGTON

GR20 SMT16B20L    現(xiàn)貨查詢(xún)上海航歐                            SETTIMA

911M 13 2415 WS   現(xiàn)貨查詢(xún)上海航歐                            TAUNUSLICHT

RFD-4021-618-211-401   現(xiàn)貨查詢(xún)上海航歐                            NOVO

200250121       現(xiàn)貨查詢(xún)上海航歐                            BONFIGLIOLI

PGL-8-W-S/S2  現(xiàn)貨查詢(xún)上海航歐         6509-40006-0000              VESTER

D2774B4001 DC24V       現(xiàn)貨查詢(xún)上海航歐                            ROSS

116-5861-011.5300 Autropoint HC300   現(xiàn)貨查詢(xún)上海航歐                            Autronica

LMP30 322-00169   現(xiàn)貨查詢(xún)上海航歐                            TR

32 07332B43UL        現(xiàn)貨查詢(xún)上海航歐                            KENDRION

FSTT-0C75XA20   現(xiàn)貨查詢(xún)上海航歐                            DAIICHI

FWTT-0A8FFA20    現(xiàn)貨查詢(xún)上海航歐                            DAIICHI

FWTT-0A4FFA20       現(xiàn)貨查詢(xún)上海航歐                            DAIICHI

FWTT-ZZZFFA20       現(xiàn)貨查詢(xún)上海航歐                            DAIICHI

V200-18-E62B 現(xiàn)貨查詢(xún)上海航歐                            UNITRONICS

42R6BFPP-FX2 現(xiàn)貨查詢(xún)上海航歐                            BODINE

TYPE GK 220.132.20-W2 現(xiàn)貨查詢(xún)上海航歐                            GEA

 SC010

 SD010

Zero-Max調(diào)速器 SC020

 SD020

 SC030

 SD030

 SC035

 SD035

 SC040

 SD040

 SC050

 SD050

 SC060

 SD060

 SC080

 SD080

 SD005R

 SD010R

 SD020R

 SD030R

 SD035R

 SD040R

 SD050R

 SD060R

 SC005R

 SC010R

 SC020R

 SC030R

 SC035R

 SC040R

 SC050R

 SC060R

 CD聯(lián)軸器:

 6A18

 6A22

 6A26

 6A30

 6A37

 6A45

 6A52

 6A60

 6A67

 6A77

 6A90

 6A105

 6A120

 6A18C

 6A22C

 6A26C

 6A30C

 6A37C

 6A45C

 6A52C

 6A60C

 6A67C

 6A18A

 6A22A

 6A26A

 6A30A

 6A37A

 6A45A

 6A52A

 6A60A

 6A18-AC

 6A22-AC

 6A26-AC

 6A30-AC

 6A37-AC

 6A45-AC

 6A52-AC

 6A60-AC

 6A30-SS

 6A37-SS

 6A45-SS

 6A52-SS

 6A30C-SS

 6A37C-SS

 6A45C-SS

 6A52C-SS

 6P18

 6P22

 6P26

 6P30

 6P37

 6P45

 6P52

 6P60

 6P67

 6P77

 6P90

 6P105

 6P120

 6P18C

 6P22C

 6P26C

 6P30C

 6P37C

 6P45C

 6P52C

 6P60C

 6P67C

 6P18A

 6P22A

6P26A

6P30A

6P37A

6P45A

6P52A

6P60A

6P18-AC

6P22-AC

6P26-AC

6P30-AC

6P37-AC

6P45-AC

6P52-AC

6P60-AC

6F22

6F26

6F30

6F37

6F45

6F52

6F60

6F67

6A37QD

6A45QD

6A52QD

6A60QD

6A67QD

6A77QD

6P37QD

6P45QD

6P52QD

6P60QD

6P67QD

6P77QD

L115A

L119A

L230C

L234C

L239C

L246C

L253C

L259C

L270C

L280C

L290C

L281C

L289C

L210C

L211C

L214C

L217C

L220C

L350C

L355C

L360C

L375C

L385C

L310C

L312C

L431C

L431D

L442C

L442D

L436C

L436D

L448C

L448D

L463C

L463D

L485C

L485D

L481C

L481D

L411C

L411D

L536S

L558S

L564S

L585S

L582S

L511S

L514S

L517S

L519S

L526S

F008A

F011A

F019A

F028A

F008B

F011B

F019B

F028B

F011C

F019C

C008P

C011P

C016P

C023P

C031P

C208P

C211P

C216P

C223P

C231P

C030P

C045P

C060P

C075P

襯套:

ETP-3/4

ETP-7/8

ETP-15/16

ETP-1

ETP-1 1/8

ETP-1 3/16

ETP-1 1/4

ETP-1 5/16

ETP-1 3/8

ETP-1 7/16

ETP-1 1/2

ETP-1 5/8

ETP-1 11/16

ETP-1 3/4

ETP-1 15/16

ETP-2

ETP-2 3/16

ETP-2 7/16

ETP-2 1/2

ETP-2 15/16

ETP-3

ETP-3 7/16

ETP-3 15/16

ETP-4

ETP-15

ETP-19

ETP-20

ETP-22

ETP-24

ETP-25

ETP-28

ETP-30

ETP-32

ETP-35

ETP-38

ETP-40

ETP-42

ETP-45

ETP-48

ETP-50

ETP-55

ETP-60

ETP-65

ETP-70

ETP-75

ETP-80

ETP-85

ETP-90

ETP-95

ETP-100

ETP-R15

ETP-R20

ETP-R25

ETP-R30

ETP-R35

ETP-R40

ETP-R45

ETP-R50

E-5/8"

E-15

E-19

E-3/4"

E-20

E-22

E-7/8"

E-24

E-25

E-1"

E-28

E-1 1/8"

E-30

E-1 1/4"

E-32

E-1 3/8"

E-35

E-1 7/16"

E-38

E-1 1/2"

E-40

E-42

E-45

E-48

E-50

E-2"

E-55

E-60

E-70

E-80

ETP-ER15

ETP-ER 5/8"

ETP-ER 3/4"

ETP-ER20

ETP-ER 7/8"

ETP-ER25

ETP-ER 1"

ETP-ER 1-1/8"

ETP-ER30

ETP-ER 1-1/4"

ETP-ER35

ETP-ER 1-1/2"

ETP-ER40

ETP-ER45

ETP-ER50

ETP-ER 2"

ETP-ER60

ETP-ER70

ETP-ER80

T-15

T-20

T-25

T-1"

T-30

T-1 1/4"

T-32

T-35

T-1 1/2"

T-40

T-45

T-50

T-60

T-70

T-75

T-80

T-90

T-100

K-1/4-C

K-3/8-C

K-1/2-C

K-5/8-C

K-3/4-C

K-7/8-C

K-1.0-C

K-6-C

K-7-C

K-8-C

K-9-C

K-10-C

K-11-C

K-12-C

K-14-C

K-15-C

K-16-C

K-17-C

K-18-C

K-19-C

K-20-C

K-22-C

K-24-C

K-25-C

K-28-C

K-30-C

K-32-C

K-35-C

ETP-R15

ETP-R20

ETP-R25

ETP-R30

ETP-R40

ETP-R50

ETP-ER15

ETP-ER20

ETP-ER25

ETP-ER30

ETP-ER35

ETP-ER40

ETP-ER50

上海航歐銷(xiāo)售Zero-Max聯(lián)軸器Zero-Max接頭Zero-Max齒輪箱Zero-Max制動(dòng)器Zero-Max轉(zhuǎn)向器Zero-Max輪轂Zero-Max調(diào)速器Zero-Max夾緊器Zero-Max夾緊裝置Zero-Max驅(qū)動(dòng)器Zero-Max漲緊套Zero-Max變速箱Zero-Max限制器Zero-Max襯套Zero-Max聯(lián)軸器彈性塊